1. Guidelines for safe recreational water environments;World Health Organisation, WHO,2003
2. Guidelines for safe recreational water environments;World Health Organisation, WHO,2006
3. Fatalities in swimming pools with lifeguards: USA, 2000–2008;Pelletier;Inj. Prev.,2011
4. More swimmers will result in a healthier society, fewer drownings and reduced healthcare costs;Lachocki,2012
5. Luctor et Emergo. Een Nieuwe Visie op Toezicht in Zwembaden;Jagersma,2010