@article{ZNSL_2012_398_a3,
     author = {V. V. Borzov and E. V. Damaskinsky},
     title = {Differential equations for the elementary 3-symmetric {Chebyshev} polynomials},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {64--86},
     publisher = {mathdoc},
     volume = {398},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2012_398_a3/}
}