@article{1077375777, author = {Biesterfeldt, Jr., H. J.}, title = {Properties of solution-preserving operators}, journal = {Duke Math. J.}, volume = {32}, number = {1}, year = {1965}, pages = { 285-289}, language = {en}, url = {http://dml.mathdoc.fr/item/1077375777} }
Biesterfeldt, Jr., H. J. Properties of solution-preserving operators. Duke Math. J., Tome 32 (1965) no. 1, pp. 285-289. http://gdmltest.u-ga.fr/item/1077375777/