@article{PismaZhETF.16.209, title = {Cooperative Tunnel Effect in Semiconducting Antimony Compounds Having a Mixed Valence}, author = {Aleksandrov, A. Yu. and Ionov, S. I. and Baltrunas, D. A. and Makarov, E. F.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {16}, issue = {4}, pages = {209}, year = {1972}, doi = {}, url = {http://jetpletters.ru/ps/0/article_26771.shtml}, }