@article{SM_2018_209_4_a2,
     author = {S. A. Melikhov},
     title = {Immersions of the circle into a surface},
     journal = {Sbornik. Mathematics},
     pages = {503--518},
     publisher = {mathdoc},
     volume = {209},
     number = {4},
     year = {2018},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2018_209_4_a2/}
}