@article{1178245558,
author = {Iwamoto, Hideyuki},
title = {On the relation between homological structure of Riemannian spaces and exact differential forms which are invariant under holonomy groups, I},
journal = {Tohoku Math. J. (2)},
volume = {3},
number = {3},
year = {1951},
pages = { 59-70},
language = {en},
url = {http://dml.mathdoc.fr/item/1178245558}
}
Iwamoto, Hideyuki. On the relation between homological structure of Riemannian spaces and exact differential forms which are invariant under holonomy groups, I. Tohoku Math. J. (2), Tome 3 (1951) no. 3, pp. 59-70. http://gdmltest.u-ga.fr/item/1178245558/