@article{PismaZhETF.73.186,
    title = {Nonperturbative $a$-expansion technique and the~Adler $D$-function},
    author = {Sissakian, A. N. and Solovtsov, I. L. and Solovtsova, O. P.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {73},
    issue = {4},
    pages = {186},
    year = {2001},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_9688.shtml},
}