@article{1029004391,
author = {Kossowski, Marek},
title = {The null blow-up of a surface in Minkowski $3$-space and intersection in the spacelike Grassman [Grassmannian].},
journal = {Michigan Math. J.},
volume = {38},
number = {1},
year = {1991},
pages = { 401-415},
language = {en},
url = {http://dml.mathdoc.fr/item/1029004391}
}
Kossowski, Marek. The null blow-up of a surface in Minkowski $3$-space and intersection in the spacelike Grassman [Grassmannian].. Michigan Math. J., Tome 38 (1991) no. 1, pp. 401-415. http://gdmltest.u-ga.fr/item/1029004391/