Nicolae Vasilescu-Karpen (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Nicolae Vasilescu-Karpen" in Spanish language version.

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1web.archive.org

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1greenoptimistic.com

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acad.ro

Membrii Academiei Române din 1866 până în prezent at the Romanian Academy site

greenoptimistic.com

Sandru, Ovidiu. «Karpen's Pile: A Battery That Produces Energy Continuously Since 1950 Exists in Romanian Museum». Consultado el 20 de julio de 2012.

web.archive.org

Mihai Olteneanu, Nicolae Vasilescu - Karpen 1870 - 1964 Univers Ingineresc, anul XVIII, Nr 1 (335) 1-16 ianuarie 2005, accessdate 2011-06-05