@article{SE_1958-1960__2__A3_0,
     author = {Srinivasacharyulu, K.},
     title = {On fibration of spheres by spheres and hopf invariant},
     journal = {S\'eminaire de topologie et g\'eom\'etrie diff\'erentielle},
     note = {talk:3},
     pages = {1--7},
     year = {1958-1960},
     publisher = {Secr\'etariat math\'ematique},
     volume = {2},
     zbl = {0138.18502},
     language = {en},
     url = {https://www.numdam.org/item/SE_1958-1960__2__A3_0/}
}