@article{PismaZhETF.74.314, title = {Vector Area Theorem mapping in crystals and polarization stability of SIT-solitons }, author = {Lisin, V. N.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {74}, issue = {5}, pages = {314}, year = {2001}, doi = {}, url = {http://jetpletters.ru/ps/0/article_9605.shtml}, }