@article{1077489790,
author = {Hahn, J. W. and Beckenbach, E. F.},
title = {Triples of conjugate harmonic functions and minimal surfaces},
journal = {Duke Math. J.},
volume = {2},
number = {1},
year = {1936},
pages = { 698-704},
language = {en},
url = {http://dml.mathdoc.fr/item/1077489790}
}
Hahn, J. W.; Beckenbach, E. F. Triples of conjugate harmonic functions and minimal surfaces. Duke Math. J., Tome 2 (1936) no. 1, pp. 698-704. http://gdmltest.u-ga.fr/item/1077489790/