@article{NUMA_1993__64_2_133696,
     author = {L.A. Baughman and N.J. Walkington},
     title = {Co-volume methods for degenerate parabolic problems.},
     journal = {Numerische Mathematik},
     pages = {45--68},
     publisher = {mathdoc},
     volume = {64},
     number = {2},
     year = {1993},
     zbl = {0797.65075},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1993__64_2_133696/}
}