@article{NUMA_1962__4_131518,
     author = {J. jr. DOUGLAS and B.F. jr. JONES},
     title = {Numerical {Methods} for {Integro-Differential} {Equations} of {Parabolic} and {Hyperbolic} {Types.}},
     journal = {Numerische Mathematik},
     pages = {96--102},
     year = {1962},
     volume = {4},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1962__4_131518/}
}