@article{RM_2011_66_5_a1,
     author = {Y. \^Onishi},
     title = {Generalized {Bernoulli--Hurwitz} numbers and the universal {Bernoulli} numbers},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {871--932},
     publisher = {mathdoc},
     volume = {66},
     number = {5},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2011_66_5_a1/}
}