@article{PismaZhETF.15.116, title = {Quantum-mechanical Formation of Vortices in a Superfluid Liquid}, author = {Volovik, G. E.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {15}, issue = {2}, pages = {116}, year = {1972}, doi = {}, url = {http://jetpletters.ru/ps/0/article_26504.shtml}, }