Howatson, Glyn; Bell, Phillip G.; Tallent, Jamie; Middleton, Benita; McHugh, Malachy P.; Ellis, Jason (2012). "Effect of tart cherry juice (Prunus cerasus) on melatonin levels and enhanced sleep quality". European Journal of Nutrition. 51 (8): 909–916. doi:10.1007/s00394-011-0263-7. ISSN1436-6207.
Wienecke, Elmar; Nolden, Claudia (2016). "Langzeit-HRV-Analyse zeigt Stressreduktion durch Magnesiumzufuhr". MMW - Fortschritte der Medizin (in German). 158 (S6). Springer Science and Business Media LLC: 12–16. doi:10.1007/s15006-016-9054-7. ISSN1438-3276.
Howatson, Glyn; Bell, Phillip G.; Tallent, Jamie; Middleton, Benita; McHugh, Malachy P.; Ellis, Jason (2012). "Effect of tart cherry juice (Prunus cerasus) on melatonin levels and enhanced sleep quality". European Journal of Nutrition. 51 (8): 909–916. doi:10.1007/s00394-011-0263-7. ISSN1436-6207.
Wienecke, Elmar; Nolden, Claudia (2016). "Langzeit-HRV-Analyse zeigt Stressreduktion durch Magnesiumzufuhr". MMW - Fortschritte der Medizin (in German). 158 (S6). Springer Science and Business Media LLC: 12–16. doi:10.1007/s15006-016-9054-7. ISSN1438-3276.