@article{PismaZhETF.43.161, title = {Theta-function representation of the partition function of a Polyakov string}, author = {Manin, Yu. I.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {43}, issue = {4}, pages = {161}, year = {1986}, doi = {}, url = {http://jetpletters.ru/ps/0/article_21271.shtml}, }