Graphical Regular Representations of Alternating, Symmetric, and Miscellaneous Small Groups. Mark E. Watkins — 1974 Aequationes mathematicae
Graphical Regulär Representations of Alternating, Symmetrie, and Miscellaneous Small Groups (Short Communication) MARK E. WATKINS — 1973 Aequationes mathematicae
On infinite tournaments with regular automorphism groups. D.A. Holton; Mark E. Watkins — 1981 Aequationes mathematicae
Distinguishability of locally finite trees. Watkins, Mark E.; Zhou, Xiangqian — 2007 The Electronic Journal of Combinatorics [electronic only]