@article{M2AN_1985__19_2_327_0,
     author = {Vanninathan, M. and Veerappa Gowda, G. D.},
     title = {On the regularity of the variational solution of the {Tricomi} problem in the elliptic region},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {327--340},
     publisher = {AFCET - Gauthier-Villars},
     address = {Paris},
     volume = {19},
     number = {2},
     year = {1985},
     mrnumber = {802598},
     zbl = {0573.35067},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/M2AN_1985__19_2_327_0/}
}