Homogeneity conditions in graphs. - A. Gardiner (J. Comb. Theory B, 1978)

Finite common coverings of pairs of regular graphs. - Dana Angluin; A. Gardiner (J. Comb. Theory B, 1981)

Almost rank three graphs. - A. Gardiner (Discret. Math., 1992)

Distance-transitive antipodal covers: The extremal case. - A. Gardiner (Discret. Math., 1994)