1. STANAG 3606—Edition V. Evaluation and control of laser hazards, November 1991.
2. Italian Standard CEI—76/2—Edition II. Apparecchi laser—Sicurezza delle Radiazioni, Classificazione dei Materiali, prescrizioni e Guida per l'Utilizzatore, March 1993.
3. International Electrotechnical Commission IEC 60825—(Amendment 2). Safety of laser products, equipment classification, requirements and user's guide, 2001.
4. American National Standard Institute ANSI Z136.1. Safe use of lasers, 2000.
5. American National Standard Institute ANSI Z136.4. Laser safety measurements and instrumentation, 1990.