@article{VTAMU_2019_24_126_a3,
     author = {V. F. Molchanov and E. S. Yuryeva},
     title = {Integer triangles, {Pell's} equation and {Chebyshev} polynomials},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {179--186},
     year = {2019},
     volume = {24},
     number = {126},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2019_24_126_a3/}
}