@article{PismaZhETF.48.39,
    title = {Splitting of the superconducting transition in high-temperature superconductors due to a slight orthorhombic nature},
    author = {Volovik, G. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {48},
    issue = {1},
    pages = {39},
    year = {1988},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16634.shtml},
}