Una-class submarine (English Wikipedia)

BSO. "Review of delivered vessels since 1980" (PDF). Brodogradilište specijalnih objekata. Archived from the original (PDF) on 13 March 2014. Retrieved 13 March 2014.

hrbi.hr

Brodarski institut - klasa Una. "Diverzantske podmornice klase Una" [Una-class midget submarines] (PDF). Brodarski institut. Retrieved 1 February 2014.
Brodarski institut - Velebit P 01. "Diverzantska podmornica Velebit P-01" [Special operation submarine Velebit P-01] (PDF). Brodarski institut. 9 December 2013.

klub-susacana.hr

Sušačka revija. Freivogel, Zvonimir. "Podmorničarska tradicija na hrvatskom Jadranu" [Submarine tradition on the Croatian Adriatic]. Sušačka revija. Retrieved 1 February 2014.

nacional.hr

Šoštarić & 7 August 2008. Šoštarić, Eduard (7 August 2008). "Bitka za jedrenjak 'Jadran'" [Battle for the sailboat 'Jadran']. Nacional. Archived from the original on 16 July 2012. Retrieved 31 January 2014.

novilist.hr

Romac & 12 April 2011. Romac, Denis (12 April 2011). "U strahu od Hrvata, Slovenci podmornicu za muzej dovoze kopnom!" [In fear of the Croatians, the Slovenians are transporting their museum submarine by land]. Novi list. Archived from the original on 7 February 2015. Retrieved 31 January 2014.

obris.org

Švel & 6 October 2012. Švel, Boris (6 October 2012). "Sudbina podmornice P-01" [Faith of the submarine P-01]. obris.org. Retrieved 31 January 2014.

openlibrary.org

Saunders 2004, p. 651. Saunders, Stephen (2004). Jane's Fighting Ships 2004–2005. Jane's Information Group Limited. ISBN 0-7106-2623-1. OL 7790644M.
Saunders 2004, p. 650. Saunders, Stephen (2004). Jane's Fighting Ships 2004–2005. Jane's Information Group Limited. ISBN 0-7106-2623-1. OL 7790644M.

podmornicar.hr

Podmorničar. "Osnivanje i gradnja diverzantskih podmornica klase P 911" [Developing and building P 911 class midget submarines]. "Podmorničar" Society. Archived from the original on 13 December 2013. Retrieved 31 January 2014.
Ministarstvo obrane. "Ustupanje podmornice od strane Ministarstva obrane Crne Gore Udruzi "Podmorničar" iz Pule" [Cession of a submarine by the Ministry of Defence of Montenegro to the "Podmorničar" Society from Pula] (PDF). "Podmorničar" Society. Archived from the original (PDF) on 24 September 2015. Retrieved 31 January 2014.

radiotivat.com

Radio Tivat & 3 July 2013. "Svečanost u Porto Montenegru - podmornica "Heroj" otvorena za posjete" [Celebration in Porto Montenegro - submarine "Heroj" open to visitors]. Radio Tivat. 3 July 2013. Archived from the original on 7 February 2015. Retrieved 31 January 2014.

slobodnadalmacija.hr

Krnić & 25 March 2013. Krnić, Denis (25 March 2013). "Stjepan Lozo: Nećemo odustati od 'Velebita'" [Stjepan Lozo: We won't give up on 'Velebit']. Slobodna Dalmacija.
Krnić & 17 September 2011. Krnić, Denis (17 September 2011). "Slovenci predstavili restauriranu podmornicu Zeta, jedino Hrvate nisu pozvali" [Slovenians presented the restored submarine Zeta, Croatians the only ones not to be invited]. Slobodna Dalmacija. Retrieved 31 January 2014.

tportal.hr

tportal.hr & 23 February 2009. S., An. (23 February 2009). "Crna Gora Hrvatskoj poklanja podmornicu" [Montenegro giving Croatia a submarine]. tportal.hr. Retrieved 31 January 2014.

vijesti.me

Luković & 19 June 2013. Luković, Siniša (19 June 2013). "Turistička atrakcija: Obilazak podmornice "Heroj" u Tivtu" [Tourist attraction: tour of the submarine "Heroj" in Tivat]. Vijesti. Archived from the original on 19 February 2014. Retrieved 31 January 2014.

web.archive.org

Podmorničar. "Osnivanje i gradnja diverzantskih podmornica klase P 911" [Developing and building P 911 class midget submarines]. "Podmorničar" Society. Archived from the original on 13 December 2013. Retrieved 31 January 2014.
BSO. "Review of delivered vessels since 1980" (PDF). Brodogradilište specijalnih objekata. Archived from the original (PDF) on 13 March 2014. Retrieved 13 March 2014.
Šoštarić & 7 August 2008. Šoštarić, Eduard (7 August 2008). "Bitka za jedrenjak 'Jadran'" [Battle for the sailboat 'Jadran']. Nacional. Archived from the original on 16 July 2012. Retrieved 31 January 2014.
Luković & 19 June 2013. Luković, Siniša (19 June 2013). "Turistička atrakcija: Obilazak podmornice "Heroj" u Tivtu" [Tourist attraction: tour of the submarine "Heroj" in Tivat]. Vijesti. Archived from the original on 19 February 2014. Retrieved 31 January 2014.
Romac & 12 April 2011. Romac, Denis (12 April 2011). "U strahu od Hrvata, Slovenci podmornicu za muzej dovoze kopnom!" [In fear of the Croatians, the Slovenians are transporting their museum submarine by land]. Novi list. Archived from the original on 7 February 2015. Retrieved 31 January 2014.
Ministarstvo obrane. "Ustupanje podmornice od strane Ministarstva obrane Crne Gore Udruzi "Podmorničar" iz Pule" [Cession of a submarine by the Ministry of Defence of Montenegro to the "Podmorničar" Society from Pula] (PDF). "Podmorničar" Society. Archived from the original (PDF) on 24 September 2015. Retrieved 31 January 2014.
Radio Tivat & 3 July 2013. "Svečanost u Porto Montenegru - podmornica "Heroj" otvorena za posjete" [Celebration in Porto Montenegro - submarine "Heroj" open to visitors]. Radio Tivat. 3 July 2013. Archived from the original on 7 February 2015. Retrieved 31 January 2014.