Books about Halychian and Volhynian warfare

[ST. Toma]

Hi!

I need some books (e-books or downloadable ones would be the best!) about the warfare of Rus and mostly of Halych and Volhynia (XI-XIV cent.) urgently!
They should be real historic books, written by historians, not fictive ones! And they should be in English, I don't speak Slavic languages yet.
It should be good if you could send the links of the sources of this mod.

Thanks!

[Russian Gondor]

Hmmm, books in English is a big pain. Try Google searching. Most books I know are in Russian.

[ST. Toma]

I did it, but yes, most are in Russian and Ukrainian.

[Russian Gondor]

Translate them?