@article{10_4153_CJM_1973_056_1,
     author = {Powers, David L.},
     title = {The {Frechet} {Differential} of a {Primary} {Matrix} {Function}},
     journal = {Canadian journal of mathematics},
     pages = {554--559},
     year = {1973},
     volume = {25},
     number = {3},
     doi = {10.4153/CJM-1973-056-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-056-1/}
}