Title:Fuste comercial de clones del género Populus: relación entre volumen y densidad de la madera con nutrientes inorgánicos / Commercial wood of clones of genus Populus: Relationship between growth and density of wood with inorganic nutrients
Title:Género Erythrina: fuente de metabolitos secundarios con actividad biológica / Erythrina Genus: source of secondary metabolites with biological activity
Title:System requirements engineering by V. Loucopoulos and V. Karakostas : 1995.- McGraw-Hill International series in Software Engineering. ISBN 0-07-707843-8