Robots for Help in Pedagogy and Rehabilitation: Cyber-Physical Systems for Pedagogical Rehabilitation. - Roman Zahariev; Nina Valchkova; Georgi Angelov; Yasen Paunski; Aleksander Krastev (CompSysTech, 2019)

Service Robots for Special Education of Children with Disabilities: Robotized Systems for Social Applications. - Roman Zahariev; Nina Valchkova; Hiroaki Wagatsuma (CompSysTech, 2020)

Establishing a Model Synthesis Method of a Mobile Platform for Service Collaborative Robot. - Nina Valchkova; Cvetelina Totomirova; Roman Zahariev (ICECET, 2023)