Sources scientifiques  

• https://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/peyer-johann-conrad 
  
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• James P. Lugo, Zainulabedin M. Saiyed, et Nancy E. Lane : a multicenter randomized, double-blind, placebo-controlled study », Nutrition journal 15, no 1 (2016): 14. 
• James P. Lugo et al., « Undenatured type II collagen (UC-II®), Journal of the International Society of Sports Nutrition 10, no 1 (2013): 48.  
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• U.S. Patents 7,846,487, 7,083,820 and EPO Patent EP1435906B1; Canadian patent CA 2459981C; and Japanese Patent JP 4800574B2  
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• A 32-Week Randomized, Placebo-Controlled Clinical Evaluation of RA-11. Arvind Chopra  
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• Jacob, S.W: The Current Status of MSM in Medicine. Am. Acad. Med. Prev., 1983. Jacob, S.W. and Herschler, R.J.
• https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5372953/  
• Int J Biomed Sci. 2015 Jun; 11(2): 54–60. Evaluation of the Effect of Mega MSM. Gang Xu,1 Tian Zhou,2 Yaqin Gu,3 Qinping Wang,3 Mina Shariff,4 Pingping Gu,4 Tuong Nguyen,4 Rong Shi,1 and Jianyu Rao5
• https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5372953/ 
• Yuelong Cao, Tania Winzenberg, Kay Nguo, Jianhao Lin, Graeme Jones, Changhai Ding. Rheumatology. first published online March 29, 2013