I'm having trouble tracking down the following:

Hacker, Paul (1961). "The Sāṃkhyization of the Emanation Doctrine (shown in a critical analysis of texts)", in Wiener Zeitschrift fur die Kunde Sud- und Ostasiens un Archiv fur indische Philosophie 5, pp.75-112.

If a pdf is available to share, please reach out. 

Thanks and best wishes to all,

Matthew