@article{ZNSL_2017_464_a3,
     author = {E. C. Krasko},
     title = {Counting unlabelled chord diagrams of maximal genus},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {77--87},
     year = {2017},
     volume = {464},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2017_464_a3/}
}