Stoikova, M., Nencheva, S. Medico-social problems of the elderly people in Bulgaria. Athens: Papazissis pub., 2011 291-297,.
Stoikova, M., Nencheva, S. Medico-social problems of the elderly people in Bulgaria. Athens: Papazissis pub., 2011 291-297,.
Stoikova, M., Nencheva, S. (2011) Medico-social problems of the elderly people in Bulgaria, Athens: Papazissis pub. 291-297,.
Stoikova, M., & Nencheva, S. (2011). Medico-social problems of the elderly people in Bulgaria. Public health and health care in Greece and Bulgaria : The challenge of the cross-border collaboration in times of financial crisis (с. 291-297). Athens: Papazissis pub..
Stoikova M, Nencheva S. Medico-social problems of the elderly people in Bulgaria. Athens: Papazissis pub.; 2011. p. 291-297.