@article{RM_2016_71_2_a7,
     author = {S. M. Natanzon and A. M. Pratusevich},
     title = {Classification of $m$-spin {Klein} surfaces},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {382--384},
     publisher = {mathdoc},
     volume = {71},
     number = {2},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2016_71_2_a7/}
}