Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{ARM_1983__19_3_a7, author = {Ka\v{n}ovsk\'y, Vladim{\'\i}r}, title = {Global transformations of linear differential equations and quadratic functionals. {I}}, journal = {Archivum mathematicum}, pages = {161--171}, publisher = {mathdoc}, volume = {19}, number = {3}, year = {1983}, mrnumber = {725199}, zbl = {0548.34039}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1983__19_3_a7/} }
Kaňovský, Vladimír. Global transformations of linear differential equations and quadratic functionals. I. Archivum mathematicum, Tome 19 (1983) no. 3, pp. 161-171. http://geodesic.mathdoc.fr/item/ARM_1983__19_3_a7/