Request to the federated knowledge of #history here in the Fediverse

Can anyone recommend me a (scientific) book (or several) on #Russia during the #Middle Ages?

Gladly with focus on Boris #Godunov ; the false Dmitriy, #Novgorod #Rurikid.

So until the beginning of the 16th century

Book can be in English, French and German

Last week I was with my 🇷🇺 wife in Vladimir and Rostov Velikij and had to realize my cluelessness