@article{PIM_1975_N_S_19_33_a0,
     author = {Hukum Chad Agrawal},
     title = {A {Note} {On} {Generalized} {Tricomi} {Polynomials}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {5 },
     publisher = {mathdoc},
     volume = {_N_S_19},
     number = {33},
     year = {1975},
     url = {http://geodesic.mathdoc.fr/item/PIM_1975_N_S_19_33_a0/}
}