@article{PismaZhETF.46.253,
    title = {Representation of a Dirac particle as a sum over paths},
    author = {Marshakov, A. V. and Fainberg, V. Ya.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {46},
    issue = {7},
    pages = {253},
    year = {1987},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18574.shtml},
}