@article{NUMA_1968__12_131862,
     author = {A.R. MITCHELL and A.R. GOURLAY},
     title = {High {Accuracy} {A.D.I.} {Methods} for {Parabolic} {Equations} with {Variable} {Coefficients.}},
     journal = {Numerische Mathematik},
     pages = {180--185},
     publisher = {mathdoc},
     volume = {12},
     year = {1968},
     zbl = {0167.16001},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1968__12_131862/}
}