@article{AIF_1987__37_4_161_0,
     author = {Kraft, Hanspeter and Procesi, Claudio},
     title = {Graded morphisms of $G$-modules},
     journal = {Annales de l'Institut Fourier},
     pages = {161--166},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {37},
     number = {4},
     year = {1987},
     doi = {10.5802/aif.1115},
     mrnumber = {89e:20078},
     zbl = {0818.13015},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/aif.1115/}
}