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psicothema.com
Epigenetics and its implications for Psychology Héctor González-Pardo and Marino Pérez Álvarez, Universidad de Oviedo. Psicothema, 2013, Vol. 25, No. 1, 3-12 doi: 10.7334/psicothema2012.327
Philosophy of Psychiatry Murphy, Dominic. The Stanford Encyclopedia of Philosophy (Fall 2010 Edition), Edward N. Zalta (ed.). In turn citing Birnbaum, K., 1923. "The Making of a Psychosis," Tr. H. Marshall, in S. R. Hirsch & M Shepherd (eds) Themes and Variations in European Psychiatry, Bristol: John Wright. 1974: 197–238.