@article{Armitage_2003, title={Dynamics of immigration into Yellow-Bellied Marmot colonies}, volume={12}, url={http://om.vuvb.uniza.sk/index.php/OM/article/view/164}, number={1-2}, journal={Oecologia Montana}, author={Armitage, K.B.}, year={2003}, month={Dec.}, pages={21-24}