No further work was done until the beginning of the Cold War:
Most of the recent research is considered pseudo-scientific in The West. And indeed it seems as though a good deal of modern day pseudo-scientific beliefs originated behind the Iron Curtain. Some of us are old enough to remember "pyramid power" from the 1970s. Interestingly enough:
There is debate over who coined the term "pyramid power." Author Max Toth has claimed he coined the phrase, as has Patrick Flanagan. In the 1970s, both authors released books entitled Pyramid Power. This led to a lawsuit by Flanagan against Toth, according to Toth.
However, the term in the context of its current usage first appeared in print in Sheila Ostrander and Lynn Schroeder's 1970 book Psychic Discoveries Behind the Iron Curtain. They claim the term was coined by "Czechoslovakian researchers" in the 1960s.
And indeed we see that research on like topics continued even into the new millenium:
In any case, one of the things that first made me love the Internet was Jessica Utts analysis of the Stargate Program . It was made available as a downloadable document, charts and tables and all, and it made me think that the on-line would become a repository of secret knowledge. A library of magic, perhaps. In the end it it turned out to be a repository of hardcore porn, but for a brief moment...