@article{1138036368, author = {de L\'eon, Manuel}, title = {Connections and $f$-structures on $T^{2}M$}, journal = {Kodai Math. J.}, volume = {4}, number = {1}, year = {1981}, pages = { 189-216}, language = {en}, url = {http://dml.mathdoc.fr/item/1138036368} }
de Léon, Manuel. Connections and $f$-structures on $T^{2}M$. Kodai Math. J., Tome 4 (1981) no. 1, pp. 189-216. http://gdmltest.u-ga.fr/item/1138036368/