Mercado, Angelo. In Memoriam Helmut Rix. Sauvage Noble: An Austronesian’s Adventures in Altertumswissenschaft and Indogermanistik. December 2004 [10 March 2018]. (原始内容存档于3 March 2016).
Mercado, Angelo. In Memoriam Helmut Rix. Sauvage Noble: An Austronesian’s Adventures in Altertumswissenschaft and Indogermanistik. December 2004 [10 March 2018]. (原始内容存档于3 March 2016).