@article{NUMA_1982__39_132801,
     author = {M.M. Chawla and C.P. Katti},
     title = {Finite {Difference} {Methods} and {Their} {Convergence} for a {Class} of {Singular} {Two} {Point} {Boundary} {Value} {Problems.}},
     journal = {Numerische Mathematik},
     pages = {341--350},
     publisher = {mathdoc},
     volume = {39},
     year = {1982},
     zbl = {0489.65055},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1982__39_132801/}
}