@article{SIGMA_2015_11_a96,
     author = {J. Harnad},
     title = {Multispecies {Weighted} {Hurwitz} {Numbers}},
     journal = {Symmetry, integrability and geometry: methods and applications},
     year = {2015},
     volume = {11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SIGMA_2015_11_a96/}
}