@article{PismaZhETF.21.612,
    title = {Extensions of the Poincare algebra by spinor generators},
    author = {Konopel'chenko, B. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {21},
    issue = {10},
    pages = {612},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22502.shtml},
}