@article{IIGUM_2023_44_a4, author = {Sreelatha Chandragiri}, title = {Counting lattice paths by using difference equations with non-constant coefficients}, journal = {The Bulletin of Irkutsk State University. Series Mathematics}, pages = {55--70}, publisher = {mathdoc}, volume = {44}, year = {2023}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IIGUM_2023_44_a4/} }