@article{IM_1981__65_142839,
     author = {David R. Hayes},
     title = {Analytic {Class} {Number} {Formulas} in {Function} {Fields.}},
     journal = {Inventiones mathematicae},
     pages = {49--70},
     publisher = {mathdoc},
     volume = {65},
     year = {1981},
     zbl = {0491.12014},
     url = {http://geodesic.mathdoc.fr/item/IM_1981__65_142839/}
}