@article{1183499332,
author = {Langer, R. E.},
title = {On the determination of earth conductivity from observed surface potentials},
journal = {Bull. Amer. Math. Soc.},
volume = {42},
number = {12},
year = {1936},
pages = { 747-754},
language = {en},
url = {http://dml.mathdoc.fr/item/1183499332}
}
Langer, R. E. On the determination of earth conductivity from observed surface potentials. Bull. Amer. Math. Soc., Tome 42 (1936) no. 12, pp. 747-754. http://gdmltest.u-ga.fr/item/1183499332/