G. Rivera

Aerobic and anaerobic biofiltration in an aquaculture unit—Nitrite accumulation as a result of nitrification and denitrification

J. Rijn, G. Rivera, 1990 .

Nectar secretion pattern, removal effects, and breeding system of Ligaria cuneifolia (Loranthaceae)

G. Rivera, L. Galetto, L. Bernardello, 1996 .

Nectar, nectaries, flower visitors, and breeding system in five terrestrial Orchidaceae from central Argentina

G. Rivera, G. Bernardello, L. Galetto, 1997, Journal of plant research.

Nuptial nectary structure of Bignoniaceae from Argentina

G. Rivera, 2000 .