DB Class 420 (English Wikipedia)

Durchdenwald, Thomas (November 4, 2016). "Letztes Signal für ET 420: Ende einer Ära" [Last signal for ET 420: The end of an era]. Stuttgarter Zeitung (in German). Archived from the original on November 24, 2019. Retrieved November 24, 2019.
"Vor 40 Jahren fuhr die S-Bahn erstmals aus Frankfurt raus" [40 years ago the S-Bahn left Frankfurt for the first time]. Frankfurter Neue Presse (in German). May 27, 2018. Archived from the original on October 6, 2019. Retrieved November 24, 2019.
"S-Bahnen ET 420 auf letzter Fahrt" [ET 420 S-Bahn trains on their last run]. Stuttgarter Zeitung (in German). November 1, 2016. Archived from the original on November 24, 2019. Retrieved November 24, 2019.
"Vor 50 Jahren: Land NRW und Deutsche Bahn vereinbaren Einführung der S-Bahn" [50 years ago: Land NRW and Deutsche Bahn agree on the introduction of the S-Bahn]. report-k.de (in German). Atelier Goral GmbH. August 30, 2015. Archived from the original on September 2, 2019. Retrieved September 2, 2019.
Walter, Dirk (February 7, 2013). "S-Bahn will Uralt-Züge aus Stuttgart holen" [S-Bahn wants to get old trains from Stuttgart]. Münchner Merkur (in German). Archived from the original on November 24, 2019. Retrieved November 24, 2019.
"420 298 - Elektrischer Triebzug" [420 298 - Electric multiple unit]. oef-online.de (in German). Oberhessische Eisenbahnfreunde e.V. Archived from the original on November 24, 2019. Retrieved November 24, 2019.
Sannert, Doris (October 20, 2011). "S-Bahn-Geschichte im Triebwagen" [S-Bahn history in the multiple unit]. schwarzwaelder-bote.de. Horb am Neckar: Schwarzwälder Bote Mediengesellschaft mbH. Archived from the original on November 24, 2019. Retrieved November 24, 2019.
"Baureihe 420" [Class 420]. eisenbahn-erlebniswelt.de (in German). Schienenverkehrsgesellschaft mbH (SVG). Archived from the original on November 24, 2019. Retrieved November 24, 2019.
"ET 420 416 mit Sonderausstattung (420Plus)" [ET 420 416 with special features (420Plus)]. dbmuseum.de (in German). Deutsche Bahn Stiftung. Archived from the original on September 20, 2019. Retrieved September 20, 2019.

books.google.com

Winfried, Reinhardt (2018). Öffentlicher Personennahverkehr: Technik – rechts- und betriebswirtschaftliche Grundlagen [Public transport: Technology - law and economic basics] (in German). Springer-Verlag. pp. 233, 298. ISBN 9783658220594.

dbmuseum.de

"ET 420 416 mit Sonderausstattung (420Plus)" [ET 420 416 with special features (420Plus)]. dbmuseum.de (in German). Deutsche Bahn Stiftung. Archived from the original on September 20, 2019. Retrieved September 20, 2019.

dewezet.de

"Faszination Bahnhof" [Fascination station]. Deister- und Weserzeitung (in German). October 30, 2016. Archived from the original on March 14, 2019. Retrieved November 24, 2019.

eisenbahn-erlebniswelt.de

"Baureihe 420" [Class 420]. eisenbahn-erlebniswelt.de (in German). Schienenverkehrsgesellschaft mbH (SVG). Archived from the original on November 24, 2019. Retrieved November 24, 2019.

fnp.de

"Vor 40 Jahren fuhr die S-Bahn erstmals aus Frankfurt raus" [40 years ago the S-Bahn left Frankfurt for the first time]. Frankfurter Neue Presse (in German). May 27, 2018. Archived from the original on October 6, 2019. Retrieved November 24, 2019.

hr-online.de

"S-Bahn-Oldtimer nimmt Abschied" [S-Bahn oldtimer says goodbye]. hr-online.de (in German). Hessischer Rundfunk. October 31, 2014. Archived from the original on November 5, 2014.

merkur.de

Walter, Dirk (February 7, 2013). "S-Bahn will Uralt-Züge aus Stuttgart holen" [S-Bahn wants to get old trains from Stuttgart]. Münchner Merkur (in German). Archived from the original on November 24, 2019. Retrieved November 24, 2019.

oef-online.de

"420 298 - Elektrischer Triebzug" [420 298 - Electric multiple unit]. oef-online.de (in German). Oberhessische Eisenbahnfreunde e.V. Archived from the original on November 24, 2019. Retrieved November 24, 2019.

pro-bahn-hessen.de

"Der ET 420 hat ausgedient – eine Geschichte von bedeutender Infrastruktur in einem Ballungsraum ist zu Ende" [The ET 420 has had its day - a story of significant infrastructure in an urban area is over]. pro-bahn-hessen.de (in German). PRO BAHN Landesverband Hessen e.V. November 5, 2014. Retrieved November 24, 2019.

railwaygazette.com

Hondius, Harry (September 1, 2003). "Pendeltåg X60 EMU takes shape". railwaygazette.com. Railway Gazette. Archived from the original on March 28, 2019. Retrieved November 24, 2019.

report-k.de

"Vor 50 Jahren: Land NRW und Deutsche Bahn vereinbaren Einführung der S-Bahn" [50 years ago: Land NRW and Deutsche Bahn agree on the introduction of the S-Bahn]. report-k.de (in German). Atelier Goral GmbH. August 30, 2015. Archived from the original on September 2, 2019. Retrieved September 2, 2019.

schwarzwaelder-bote.de

Sannert, Doris (October 20, 2011). "S-Bahn-Geschichte im Triebwagen" [S-Bahn history in the multiple unit]. schwarzwaelder-bote.de. Horb am Neckar: Schwarzwälder Bote Mediengesellschaft mbH. Archived from the original on November 24, 2019. Retrieved November 24, 2019.

stuttgarter-zeitung.de

Durchdenwald, Thomas (November 4, 2016). "Letztes Signal für ET 420: Ende einer Ära" [Last signal for ET 420: The end of an era]. Stuttgarter Zeitung (in German). Archived from the original on November 24, 2019. Retrieved November 24, 2019.
"S-Bahnen ET 420 auf letzter Fahrt" [ET 420 S-Bahn trains on their last run]. Stuttgarter Zeitung (in German). November 1, 2016. Archived from the original on November 24, 2019. Retrieved November 24, 2019.

sueddeutsche.de

Völklein, Marco (December 29, 2016). "Münchner S-Bahn in Nürnberg abgestellt" [Munich S-Bahn stabled in Nuremberg]. Süddeutsche Zeitung (in German). Archived from the original on March 20, 2019. Retrieved November 24, 2019.
Völklein, Marco (October 6, 2014). "Wie alte Züge aufgemöbelt werden" [How old trains get refurbished]. Süddeutsche Zeitung (in German). Archived from the original on March 16, 2019. Retrieved November 24, 2019.
Steinbacher, Ulrike (January 10, 2018). "Die Strategie der Überbrückung" [The strategy of bypassing]. Süddeutsche Zeitung (in German). Archived from the original on March 16, 2019. Retrieved November 24, 2019.

web.archive.org

Hondius, Harry (September 1, 2003). "Pendeltåg X60 EMU takes shape". railwaygazette.com. Railway Gazette. Archived from the original on March 28, 2019. Retrieved November 24, 2019.
Völklein, Marco (December 29, 2016). "Münchner S-Bahn in Nürnberg abgestellt" [Munich S-Bahn stabled in Nuremberg]. Süddeutsche Zeitung (in German). Archived from the original on March 20, 2019. Retrieved November 24, 2019.
Völklein, Marco (October 6, 2014). "Wie alte Züge aufgemöbelt werden" [How old trains get refurbished]. Süddeutsche Zeitung (in German). Archived from the original on March 16, 2019. Retrieved November 24, 2019.
Steinbacher, Ulrike (January 10, 2018). "Die Strategie der Überbrückung" [The strategy of bypassing]. Süddeutsche Zeitung (in German). Archived from the original on March 16, 2019. Retrieved November 24, 2019.
"S-Bahn-Oldtimer nimmt Abschied" [S-Bahn oldtimer says goodbye]. hr-online.de (in German). Hessischer Rundfunk. October 31, 2014. Archived from the original on November 5, 2014.
"Faszination Bahnhof" [Fascination station]. Deister- und Weserzeitung (in German). October 30, 2016. Archived from the original on March 14, 2019. Retrieved November 24, 2019.