I found this on Amazon which seems like a sober analysis of the philosophy: Russian Eurasianism: An Ideology of Empire https://www.amazon.com/dp/1421405768/ref=cm_sw_r_cp_api_i_9ABNPBMH6JY2AVP5BWR8?_encoding=UTF8&psc=1
I am going out on a limb here, but I recommend reading some books regarding classical geopolitics and Eurasianism. Many people talk about geopolitics, but don't know what classical geopolitics actually is.
Russian Eurasianism: An Ideology of Empire
Foundations of Eurasianism: Volume I
Classical Geopolitics: A New Analytical Model
I think its rather amusing that this sub is named geopolitics, but most people here don't know what it is, pretend IR is geopolitics amd evem worse dismiss geopolitics saying that IR is more relevant.