An architecture for robust UAV navigation in GPS-denied areas. - Francisco Javier Pérez-Grau; Ricardo Ragel; Fernando Caballero; Antidio Viguria; Aníbal Ollero Baturone (J. Field Robotics, 2018)

Developing a Robot's Empathetic Reactive Response Inspired by a Bottom-Up Attention Model. - Randy Gomez; Yu Fang; Serge Thill; Ricardo Ragel; Heike Brock; Keisuke Nakamura; Yurii Vasylkiv; Eric Nichols; Luis Merino (ICSR, 2021)

Design and Development of a Teleoperation System for Affective Tabletop Robot Haru. - Yurii Vasylkiv; Ricardo Ragel; Javier Ponce Chulani; Luis Merino; Eleanor Sandry; Heike Brock; Keisuke Nakamura; Pourang Irani; Randy Gomez (ICSR, 2021)

Multi-modal Data Fusion for People Perception in the Social Robot Haru. - Ricardo Ragel; Rafael Rey; Álvaro Páez; Javier Ponce Chulani; Keisuke Nakamura; Fernando Caballero; Luis Merino; Randy Gomez (ICSR (1), 2022)