@article{1195522957,
author = {Haruki, Hiroshi},
title = {On a characteristic property of confocal conic sections},
journal = {Proc. Japan Acad.},
volume = {39},
number = {9},
year = {1963},
pages = { 564-565},
language = {en},
url = {http://dml.mathdoc.fr/item/1195522957}
}
Haruki, Hiroshi. On a characteristic property of confocal conic sections. Proc. Japan Acad., Tome 39 (1963) no. 9, pp. 564-565. http://gdmltest.u-ga.fr/item/1195522957/