@article{PismaZhETF.15.204, title = {Change of Topology of Fermi Surface in Crystals with an Additional Long Period, and Some Associated Effects}, author = {Brandt, N. B. and Ioon, E. R. and Chudinov, S. M. and Yakovlev, G. D.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {15}, issue = {4}, pages = {204}, year = {1972}, doi = {}, url = {http://jetpletters.ru/ps/0/article_26529.shtml}, }