Riemann Surface Transformation Groups. - E. Keith Lloyd (J. Comb. Theory A, 1972)

J. Howard Redfield 1879-1944. - E. Keith Lloyd (J. Graph Theory, 1984)

Redfield's papers and their relevance to counting isomers and isomerizations. - E. Keith Lloyd (Discret. Appl. Math., 1988)

Enumeration of Polyene Hydrocarbons: A Complete Mathematical Solution. - Sven J. Cyvin; Jon Brunvoll; Egil Brendsdal; Bjørg N. Cyvin; E. Keith Lloyd (J. Chem. Inf. Comput. Sci., 1995)

Circumscribing Certain Polygonal Systems. - Sven J. Cyvin; Bjørg N. Cyvin; Jon Brunvoll; E. Keith Lloyd (Discret. Appl. Math., 1996)