@dalem awhile back I went down a bit of a rabbit hole with psychotronics but it seems like most of it is stuff that is only available in Czech (unsurprising since it's extremely fringe) so I could only learn very superficial stuff about it and whatever the literal CIA has to say on the subject. I found that a lot of the books that were written on it in the original Czech though are fairly easily acquired since it was all done more openly and with more state backing in the Soviet Union. I don't think I could justify learning a whole ass language to do this but it's been one of my pet project obsessions to try to learn more about adapting their theory and tech for DIY psionics.