@article{NUMA_1993__65_4_133743,
     author = {S. Joe and Y. Yan},
     title = {A piecewise constant collocation method using cosine mesh grading for {Symm's} equation.},
     journal = {Numerische Mathematik},
     pages = {423--434},
     publisher = {mathdoc},
     volume = {65},
     number = {4},
     year = {1993},
     zbl = {0799.65146},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1993__65_4_133743/}
}