@article{MABA_1992_6_4_a3,
     author = {Miryana S. Hristova},
     title = {On the {Commutant} of a {General} {Linear} {Operator} of {Differentiation} {Type}},
     journal = {Mathematica balkanica},
     pages = {333},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {1992},
     url = {http://geodesic.mathdoc.fr/item/MABA_1992_6_4_a3/}
}