Postby Qrt.S » Sun Jan 10, 2021 11:49 am
Ther are a few books, but they are rather difficult to find and expensive
Start with the authors:
Postnikova-Loseva-Uljanova
Alur Reinans
Aleksandr Ivanov's green and two blue books.
...
FYI!
For your own good, if you find a book, ask here before you buy it. There are frankly said lousy copies of copies on the market. Many of them are sloppy made containing errors, mistakes, misspellings etc.etc. Another problem is the language. The books i mentioned are in Russia, Estonia and German. I rather not recommend books you might find in English. Anyway, they can be used to a certain point but you have to be very careful with them and recheck the info from other sources. The best advice I can give you is: Ask here!