@article{RM_2005_60_2_a13,
     author = {S. M. Natanzon and A. M. Pratusevich},
     title = {The topology of~m{\textendash}spinor structures {on~Riemann} surfaces},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {363--364},
     year = {2005},
     volume = {60},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2005_60_2_a13/}
}