@article{PismaZhETF.64.283,
    title = {Sign phase transition and directed paths in random media},
    author = {Spivak, χ. and Feng, S. and Zeng, F.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {64},
    issue = {4},
    pages = {283},
    year = {1996},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_14939.shtml},
}