@article{1200690417,
author = {Terasaka, Hidetaka and Hosokawa, Fujitsugu},
title = {On the unknotted sphere $S\sp2$ in $E\sp4$},
journal = {Osaka Math. J.},
volume = {13},
number = {1},
year = {1961},
pages = { 265-270},
language = {en},
url = {http://dml.mathdoc.fr/item/1200690417}
}
Terasaka, Hidetaka; Hosokawa, Fujitsugu. On the unknotted sphere $S\sp2$ in $E\sp4$. Osaka Math. J., Tome 13 (1961) no. 1, pp. 265-270. http://gdmltest.u-ga.fr/item/1200690417/