Robertson, D.R., C.W. Petersen and J.D. Brawn. 1990a. Lunar reproductive cycles of benthic-brooding reef fishes: reflections of larval-biology or adult-biology? Ecological Monographs 60:311-329.

Robertson, D.R. 1990b. Differences in the seasonalities of spawning and recruitment of some small neotropical reef fishes. Journal of Experimental Marine Biology and Ecology. 144:49-62.

Guzman, H.M., D.R. Robertson and M.L. Diaz. 1991. Distribución y abundancia de corales en el arrecife del Refugio de Vida Silvestre Isla Iguana, Pacifico de Panama. <i>Revista Biologica Tropical</i> 39:225-231

Allen, G.R. and D.R. Robertson. 1991a. Quatre espèces nouvelles d'Opisthognathidae (Jawfishes) du Pacifique oriental tropical. Revue francaise Aquariologie 18:47-52.

Robertson, D.R. 1991b. Increases in surgeonfish populations after mass mortality of the sea urchin <i>Diadema antillarum</i> in Panama indicate food limitation. Marine Biology 11:437-444.

Robertson, D.R. 1991c. The role of adult biology in the timing of spawning of tropical reef fishes. In: P.F. Sale (Ed). The Ecology of Coral Reef Fishes. Academic Press. pp 356-382.

Allen, G.R. and D.R. Robertson. 1991d. Descriptions of two new genera and four new species of Triplefins (Pisces: Tripterygiidae) from the tropical eastern Pacific. Revue francaise Aquariologie 18: 79-82.

Allen, G.R. and D.R. Robertson. 1992b. <i>Serranus socorroensis</i>, a new species of serranid fish from the tropical eastern Pacific Ocean. Revue francaise Aquariologie 19:37-40.

Allen, G.R. and D.R. Robertson. 1992c. Deux nouvelles especes de Girelles (Labridae: Halichoeres) du Pacifique oriental tropical. Revue francaise Aquariologie 19:47-52.

Allen, G.R. and D.R. Robertson. 1992d. Three new species of Triplefins (Pisces: Tripterygiidae) from Malpelo and Socorro Islands, in the tropical eastern Pacific. Revue francaise Aquariologie 19:53-56.