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APA ZitierstilPisarenko, J. G. (1991). Dyskusijni pytannja rann'oji istoriji Smolens'ka (do problemy kyevo-smolens'kyh vidnosyn 9-13 st.). Disputable problems of the early history of Smolensk (on the problem of Kiev-Smolensk relations of the 9th-13th centuries).
Chicago ZitierstilPisarenko, Ju. G. Dyskusijni Pytannja Rann'oji Istoriji Smolens'ka (do Problemy Kyevo-smolens'kyh Vidnosyn 9-13 St.). Disputable Problems of the Early History of Smolensk (on the Problem of Kiev-Smolensk Relations of the 9th-13th Centuries). 1991.
MLA ZitierstilPisarenko, Ju. G. Dyskusijni Pytannja Rann'oji Istoriji Smolens'ka (do Problemy Kyevo-smolens'kyh Vidnosyn 9-13 St.). Disputable Problems of the Early History of Smolensk (on the Problem of Kiev-Smolensk Relations of the 9th-13th Centuries). 1991.