9Kobasa SC, Maddi SR, Kahn S. Hardiness and health: A prospective study. Journal of Personality and SoCial Psychology, 1982, 42:168-177
10Costantini A, Solano L, DiNapoli R, Bosco A. Relationship between hardiness and risk of burnout in a sample of nurses working in oncology and AIDS wards. Psychotherapy Psychosomatic, 1997, 66:78-82