@article{TM_1997_216_a21,
     author = {N. G. Markley},
     title = {The genus of a~nontrivial minimal set},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {340--353},
     year = {1997},
     volume = {216},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM_1997_216_a21/}
}