@article{Abramov_2006,
    doi = {10.1007/s00200-005-0193-9},
    url = {https://doi.org/10.1007%2Fs00200-005-0193-9},
    year = {2006},
    month = {apr},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {17},
    number = {2},
    pages = {117--133},
    author = {S. A. Abramov and M. A. Barkatou and M. van Hoeij},
    title = {Apparent singularities of linear difference equations with polynomial coefficients},
    journal = {Applicable Algebra in Engineering, Communication and Computing}
}

@article{Abramov_2006, doi = {10.1007/s00200-005-0193-9}, url = {https://doi.org/10.1007%2Fs00200-005-0193-9}, year = {2006}, month = {apr}, publisher = {Springer Science and Business Media {LLC}}, volume = {17}, number = {2}, pages = {117--133}, author = {S. A. Abramov and M. A. Barkatou and M. van Hoeij}, title = {Apparent singularities of linear difference equations with polynomial coefficients}, journal = {Applicable Algebra in Engineering, Communication and Computing} }