@article{1183527965, author = {Hudson, J. F. P.}, title = {Concordance and isotopy of ${\text{PL}}$ embeddings}, journal = {Bull. Amer. Math. Soc.}, volume = {72}, number = {4}, year = {1966}, pages = { 534-535}, language = {en}, url = {http://dml.mathdoc.fr/item/1183527965} }
Hudson, J. F. P. Concordance and isotopy of ${\text{PL}}$ embeddings. Bull. Amer. Math. Soc., Tome 72 (1966) no. 4, pp. 534-535. http://gdmltest.u-ga.fr/item/1183527965/