@article{1077304585,
author = {Sakai, Fumio},
title = {The structure of normal surfaces},
journal = {Duke Math. J.},
volume = {52},
number = {1},
year = {1985},
pages = { 627-648},
language = {en},
url = {http://dml.mathdoc.fr/item/1077304585}
}
Sakai, Fumio. The structure of normal surfaces. Duke Math. J., Tome 52 (1985) no. 1, pp. 627-648. http://gdmltest.u-ga.fr/item/1077304585/