@article{PismaZhETF.33.176,
    title = {Grassmann analyticity and extension of supersymmetry},
    author = {Gal'perin, A. and Ivanov, E. and Ogievetskii, V.},
    journal = {Письма в ЖЭТФ},
    volume = {33},
    issue = {3},
    pages = {176},
    year = {1981},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22965.shtml},
}