I've been reading a lot of Russian socionics websites. Here is a set of function descriptions that I really like. (Although you have to deal with the issues of reading a machine translation.):
1) I don't agree with all of Gulenko's +/- descriptions at the bottom of the page.
2) In the description of Fe, "uncomfortable" should be read as "comfortable."
I like them because they are simple and in line with my observations of the functions. (It seems logical to think that two independent observations that are quite similar might at least be pointing in the direction of accuracy...)