• Avoiding the cul-de-sac of an aging society [Electronic resource]Kristjuhan, Ülo27th International Congress on Occupational Health : Iguassu Falls, Brazil, 20032003 / [CD-ROM]
• Chemical risk assessment in Estonia [Electronic resource]Tint, Piia27th International Congress on Occupational Health : Iguassu Falls, Brazil, 20032003 / [CD-ROM]
• Simple/flexible risk assessment method [Electronic resource]Tint, Piia; Kiivet, Gunnar27th International Congress on Occupational Health : Iguassu Falls, Brazil, 20032003 / [CD-ROM]