, Finn Sandegren, Petter Wabakken, Large Home Ranges and Possible Early Sexual Maturity in Scandinavian Bears, Bears: Their Biology and Management, Vol. 8, A Selection of Papers from the Eighth International Conference on Bear Research and Management, Victoria, British Columbia, Canada, February 1989 (1990), pp. 237-241
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Bjärvall et al. (1990) studied this question.