@article{Abramov_2014,
    doi = {10.1134/s0361768814020029},
    url = {https://doi.org/10.1134%2Fs0361768814020029},
    year = {2014},
    month = {mar},
    publisher = {Pleiades Publishing Ltd},
    volume = {40},
    number = {2},
    pages = {98--106},
    author = {S. A. Abramov and D. E. Khmelnov},
    title = {Regular solutions of linear differential systems with power series coefficients},
    journal = {Programming and Computer Software}
}

@article{Abramov_2014, doi = {10.1134/s0361768814020029}, url = {https://doi.org/10.1134%2Fs0361768814020029}, year = {2014}, month = {mar}, publisher = {Pleiades Publishing Ltd}, volume = {40}, number = {2}, pages = {98--106}, author = {S. A. Abramov and D. E. Khmelnov}, title = {Regular solutions of linear differential systems with power series coefficients}, journal = {Programming and Computer Software} }