@article{JOLT_2009_19_1_a5,
     author = {S. Natanzon and A. Pratoussevitch},
     title = {Higher {Arf} {Functions} and {Moduli} {Space} of {Higher} {Spin} {Surfaces}},
     journal = {Journal of Lie Theory},
     pages = {107--148},
     year = {2009},
     volume = {19},
     number = {1},
     zbl = {1171.30013},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2009_19_1_a5/}
}