@article{NUMA_1992__63_1_133678,
     author = {Roy Mathias},
     title = {Evaluating the {Frechet} derivative of the matrix exponential.},
     journal = {Numerische Mathematik},
     pages = {213--226},
     year = {1992},
     volume = {63},
     number = {1},
     zbl = {0756.65068},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1992__63_1_133678/}
}