1. Adad, M ., Vignanski, A ., & Himi, H . (2008). Being, nothingness, existential vacuum and behavior. In D. Yagil , A. Carmi , M. Zaci , & A. Livni (Eds.), Issues in psychology law and ethics in Israel – diagnosis and treatment judgment (pp. 335–357). Haifa: University of Haifa (In Hebrew).