@article{AM2_1979__19_136827,
     author = {L. Babai and W. Imrich},
     title = {Tournaments with given regular group.},
     journal = {Aequationes mathematicae},
     pages = {232--244},
     publisher = {mathdoc},
     volume = {19},
     year = {1979},
     zbl = {0422.05034},
     url = {http://geodesic.mathdoc.fr/item/AM2_1979__19_136827/}
}