@article{1206139503,
author = {Ohtsuka, Makoto},
title = {Extremal length of families of parallel segments},
journal = {J. Sci. Hiroshima Univ. Ser. A-I Math.},
volume = {28},
number = {2},
year = {1964},
pages = { 39-51},
language = {en},
url = {http://dml.mathdoc.fr/item/1206139503}
}
Ohtsuka, Makoto. Extremal length of families of parallel segments. J. Sci. Hiroshima Univ. Ser. A-I Math., Tome 28 (1964) no. 2, pp. 39-51. http://gdmltest.u-ga.fr/item/1206139503/