@article{GDZPPN001180401,
title = {Superconvergence for a Mixed Finite Element Method for Elastic Wave Propagation in a Plane Domain.},
journal = {Numerische Mathematik},
volume = {50},
year = {1986},
pages = {189-202},
zbl = {0607.73027},
url = {http://dml.mathdoc.fr/item/GDZPPN001180401}
}
Douglas, J., Jr.; Gupta, Chaitan P. Superconvergence for a Mixed Finite Element Method for Elastic Wave Propagation in a Plane Domain.. Numerische Mathematik, Tome 50 (1986) pp. 189-202. http://gdmltest.u-ga.fr/item/GDZPPN001180401/