Some remarks on Fitzpatrick and Flynn's Gröbner basis technique for Padé approximation. - John B. Little; David Ortiz; Ricardo Ortiz-Rosado; Rebecca Pablo; Karen Ríos-Soto (J. Symb. Comput., 2003)

Indicators identification and assessment for industrial areas renewal supporting on industrial ecology. - Elena Romero; M. Carmen Ruiz; David Ortiz; Alberto Díez (EnviroInfo, 2011)

Performance evaluation of complementary code combining diversity in DVB-SH. - Ana Cinta Oria; Vicente Baena; Joaquín Granado; José García Doblado; Darío Pérez-Calderón; Patricio López; David Ortiz (Digit. Signal Process., 2011)

Energy Efficiency Embedded Service Lifecycle: Towards an Energy Efficient Cloud Computing Architecture. - Karim Djemame; Django Armstrong; Richard E. Kavanagh; Ana Juan Ferrer; David García-Pérez; David Antona; Jean-Christophe Deprez; Christophe Ponsard; David Ortiz; Mario Macías; Jordi Guitart; Francesc Lordan; et al. (ICT4S (Workshops), 2014)

The Thirty Gigahertz Instrument Receiver for the QUIJOTE Experiment: Preliminary Polarization Measurements and Systematic-Error Analysis. - Francisco J. Casas; David Ortiz; Enrique Villa; Juan L. Cano; Jaime Cagigas; Ana R. Pérez; Beatriz Aja; J. Vicente Terán; Maria Luisa de la Fuente; Eduardo Artal; Roger Hoyland; Ricardo Génova-Santos (Sensors, 2015)

A Microwave Polarimeter Demonstrator for Astronomy with Near-Infra-Red Up-Conversion for Optical Correlation and Detection. - Francisco J. Casas; David Ortiz; Beatriz Aja; Maria Luisa de la Fuente; Eduardo Artal; Rubén Ruiz; Jesus Mirapeix (Sensors, 2019)

Spectral Efficiency. - David Ortiz (IEEE DataPort, 2024)