@article{PismaZhETF.91.451, title = {Order parameter sign-reversal near $s_\pm$-superconductor surface}, author = {Bobkov, A. M. and Bobkova, I. V.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {91}, issue = {8}, pages = {451}, year = {2010}, doi = {}, url = {http://jetpletters.ru/ps/0/article_28803.shtml}, }