Loneliness. Current scientific data
N.C. Zygouris, A.V. Karapetsas

Internet addiction and loneliness
A.V. Karapetsas, V.A. Karapetsas, N.C. Zygouris, A.I. Fotis

Coping with loneliness through music
Α.V. Κarapetsas, I.-R.M. Laskaraki