@article{PismaZhETF.53.27, title = {Electron paramagnetism of a ring}, author = {Kusmartsev, F. V.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {53}, issue = {1}, pages = {27}, year = {1991}, doi = {}, url = {http://jetpletters.ru/ps/0/article_17346.shtml}, }