"Lessons in Kindness" program
R. Stamatov, Positive Education: Content, Approaches, Perspectives
R. Stamatov, T. Kostadinova, Positive Education, Well-being, and Health
R. Stamatov, Sv. Sariyska, Positive Psychology.
R. Stamatov, Sv. Sariyska, Character Resilience.
R. Stamatov, Sv. Sariyska, Character Strengths. Guide and Program for Developing Strengths.
R. Stamatov, Sv. Sariyska, The Power of Self-Control.
