@article{1138846724,
author = {Yano, Kentaro and Ako, Mitsue},
title = {Almost quaternion structures of the second kind and almost tangent structures},
journal = {Kodai Math. Sem. Rep.},
volume = {25},
number = {1},
year = {1973},
pages = { 63-94},
language = {en},
url = {http://dml.mathdoc.fr/item/1138846724}
}
Yano, Kentaro; Ako, Mitsue. Almost quaternion structures of the second kind and almost tangent structures. Kodai Math. Sem. Rep., Tome 25 (1973) no. 1, pp. 63-94. http://gdmltest.u-ga.fr/item/1138846724/