Websites of professionals and institutions:
Lenore Hietkamp,
The Park Hotel, Shanghai (1931-1934) and its architect, Laszlo Hudec (1893-1958): "Tallest building in the far east" as metaphor for pre-communist shanghai."
Luca Poncellini,
Author of a PhD thesis (2006) on the architecture of Hudec in Shanghai, Technical University of Torino
Database of Hudec heritage at Victoria University