@article{AM2_1993__46_2-3_137545,
     author = {P.L. Butzer and M. Hauss},
     title = {Eulerian numbers with fractional order parameters.},
     journal = {Aequationes mathematicae},
     pages = {119--142},
     publisher = {mathdoc},
     volume = {46},
     number = {2-3},
     year = {1993},
     zbl = {0797.11025},
     url = {http://geodesic.mathdoc.fr/item/AM2_1993__46_2-3_137545/}
}