@article{1183493595,
author = {Wong, B. C.},
title = {A certain birational transformation of order $r^2$ between two $r$-spaces in an $\left( {r + 1} \right)$-space},
journal = {Bull. Amer. Math. Soc.},
volume = {35},
number = {6},
year = {1929},
pages = { 829-832},
language = {en},
url = {http://dml.mathdoc.fr/item/1183493595}
}
Wong, B. C. A certain birational transformation of order $r^2$ between two $r$-spaces in an $\left( {r + 1} \right)$-space. Bull. Amer. Math. Soc., Tome 35 (1929) no. 6, pp. 829-832. http://gdmltest.u-ga.fr/item/1183493595/