@article{SM_2019_210_11_a1,
     author = {A. B. Bogatyrev},
     title = {Combinatorial analysis of the period mapping: the topology of {2D} fibres},
     journal = {Sbornik. Mathematics},
     pages = {1531--1562},
     year = {2019},
     volume = {210},
     number = {11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2019_210_11_a1/}
}