@article{10_21136_CMJ_1966_100709,
     author = {Barv{\'\i}nek, Erich},
     title = {Algebraic definition of central dispersions of the 1st kind of the differential equation $y''=Q(t)y$},
     journal = {Czechoslovak Mathematical Journal},
     pages = {46--62},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1966},
     doi = {10.21136/CMJ.1966.100709},
     mrnumber = {0190406},
     zbl = {0148.33203},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1966.100709/}
}