Rubenowitz E, Axelsson G, Rylander R (January 1999). Magnesium and calcium in drinking water and death from acute myocardial infarction in women. Epidemiology. 10 (1): 31—6. doi:10.1097/00001648-199901000-00007. PMID9888277.
Arnedo-Pena A, Bellido-Blasco J, Puig-Barbera J, Artero-Civera A, Campos-Cruañes JB, Pac-Sa MR, Villamarín-Vázquez JL, Felis-Dauder C (2007). Domestic water hardness and prevalence of atopic eczema in Castellon (Spain) school children. Salud Pública de México. 49 (4): 295—301. doi:10.1590/S0036-36342007000400009. PMID17710278.
Rubenowitz E, Axelsson G, Rylander R (January 1999). Magnesium and calcium in drinking water and death from acute myocardial infarction in women. Epidemiology. 10 (1): 31—6. doi:10.1097/00001648-199901000-00007. PMID9888277.
Arnedo-Pena A, Bellido-Blasco J, Puig-Barbera J, Artero-Civera A, Campos-Cruañes JB, Pac-Sa MR, Villamarín-Vázquez JL, Felis-Dauder C (2007). Domestic water hardness and prevalence of atopic eczema in Castellon (Spain) school children. Salud Pública de México. 49 (4): 295—301. doi:10.1590/S0036-36342007000400009. PMID17710278.
A multicentre randomized controlled trial of ion-exchange water softeners for the treatment of eczema in children: protocol for the Softened Water Eczema Trial (SWET) (ISRCTN: 71423189) http://www.swet-trial.co.uk/ [Архівовано 16 січня 2020 у Wayback Machine.]
Жорсткість води // Словник-довідник з екології : навч.-метод. посіб. / уклад. О. Г. Лановенко, О. О. Остапішина. — Херсон : ПП Вишемирський В. С., 2013. — С. 87.
A multicentre randomized controlled trial of ion-exchange water softeners for the treatment of eczema in children: protocol for the Softened Water Eczema Trial (SWET) (ISRCTN: 71423189) http://www.swet-trial.co.uk/ [Архівовано 16 січня 2020 у Wayback Machine.]