1. Aastrup M, Thunholm B, Johnson J, Bertills U, Berntell A (1995) The chemistry of ground water. The Swedish bed-rock, SEPA report 4415
2. Altura BT, Altura BM (1987) Endothelium-dependent relaxation in coronary arteries requires magnesium ions. Br J Pharmacol 91:449–451
3. Altura BM, Altura BT (2009) Atherosclerosis and magnesium, in calcium and magnesium in drinking water: public health significance. World Health Organization, Geneva, pp 77–83
4. Anderson J, Young L, Long E (2010) K and health. Colorado State University.
http://www.americanheart.org/presenter.jhtml?identifier=4680
5. Bergmark M (1959) Bath and remedy. (Bad och bot, in Swedish). Natur och Kultur