@article{10_21136_CPM_1986_118277,
     author = {Neuman, Franti\v{s}ek},
     title = {Covariant constructions in the theory of linear differential equations},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {201--207},
     publisher = {mathdoc},
     volume = {111},
     number = {2},
     year = {1986},
     doi = {10.21136/CPM.1986.118277},
     mrnumber = {847318},
     zbl = {0597.34005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1986.118277/}
}