@article{1183502428,
author = {Walsh, J. L.},
title = {Note on the curvature of orthogonal trajectories of level curves Green's function. III},
journal = {Bull. Amer. Math. Soc.},
volume = {46},
number = {11},
year = {1940},
pages = { 101-108},
language = {en},
url = {http://dml.mathdoc.fr/item/1183502428}
}
Walsh, J. L. Note on the curvature of orthogonal trajectories of level curves Green's function. III. Bull. Amer. Math. Soc., Tome 46 (1940) no. 11, pp. 101-108. http://gdmltest.u-ga.fr/item/1183502428/