Gatica-AriasA.; ArrietaG.; EspinozaA. Direct somatic embryogenesis in <i>Coffea arabica L. cvs.</i&gt; Caturra and Catuaí: effect of tricontanol, light condition, and medium consistency. Agronomía Costarricense, v. 32, n. 1, 26 nov. 2007.