@article{RM_2016_71_6_a6,
     author = {P. G. Grinevich and S. P. Novikov},
     title = {On $\mathbf{s}$-meromorphic ordinary differential operators},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1143--1145},
     publisher = {mathdoc},
     volume = {71},
     number = {6},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2016_71_6_a6/}
}