Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Jovani A. Jiménez B., Juan J. González España. Sistema Doble Umbral para el Incremento de la Directividad en un Sensor Ultrasónico. RASI, 5(2):179-184, 2008. [doi]