One of the biggest problems I'm encountering with Socionics, is that most of the information I'm finding is second or third-hand information, sometimes itself translated.

Something that helped me a lot in MBTI was going back to Jung and Myers-Briggs original work, and trying to understand the system from that point, rather than reading the confused extrapolations of later authors.

The thing is, it doesn't seem that Aushra Augusta left us with any primary sources, or at least none that have been translated.

So, my question is... who is considered an authority on Socionics? Who is closest to the source in terms of their interpretation? I mean, is it a book, a website... what?