??????? ??????????

??????? ?????????? ? ???????? ?????????? ?????? ????? ???????? ????????? ??????? V-?? ?? ??? ????????? II-? ?????. ????? 1122 ???? 23 ??????????. ?? ??????????? ???? ????? ????????????????? ???????.

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??????? ??????? ???????????? , ?. 4, ??. , 1979. ? ??. 454.
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Dahmus, Joseph, The Middle Ages, A Popular History , Doubleday & Company, Inc. Garden City, New York, 1968