@article{PismaZhETF.41.216, title = {Possible splitting of a phase transition in a 2D XY model}, author = {Korshunov, S. E.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {41}, issue = {5}, pages = {216}, year = {1985}, doi = {}, url = {http://jetpletters.ru/ps/0/article_21975.shtml}, }