found: Müller, Wolfgang. Rechte indigener Gemeinschaften im Mexikanischen Verfassungsrecht, 2001?:t.p. (Wolfgang Müller) Lebenslauf (b. 13.3.1967)
found: Wikipedia, May 21, 2010(under Oscar Heym: pseudonym for Wolfgang Müller; b. Mar. 13, 1967 in Bensberg)
found: Las malas intenciones, 2012:opening titles (Wolfgang Mueller)
found: IMDB, Nov. 13, 2013(Wolfgang Müller; producer)
found: AD-PR website, viewed 7-14-2016:(Wolfgang Mueller; German producer and writer; b. 1967 Bensberg; author of Der Freund von früher)
found: Email from the author, August 18, 2016(Wolfgang Mueller; preferred form is "Mueller" which he has used now for several years)