@article{GAMA_1966_1966_1_a0,
     author = {Fern\'andez \'Alvarez-Estrada, Ram\'on},
     title = {Soluciones matriciales del sistema {d2X/dt2=AX+b.}},
     journal = {Gaceta matem\'atica},
     pages = {3-17},
     publisher = {mathdoc},
     volume = {18},
     number = {1-2},
     year = {1966},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/GAMA_1966_1966_1_a0/}
}