1. Baumgärtner S: Basic Research Efforts to Elucidate the Potentiation Procedure of Homeopathy. In Proceedings: Future Directions and Current Issues of Research in Homeopathy. Edited by: Walach H, Schneider R. 2002, Published by the Samueli Institute, 1-10. [ http://www.siib.org/Publications.asp ]
2. Becker-Witt C, Weisshuhn T, Lüdtke R, Willich SN: Quality assessment of physical research in homeopathy. J Altern Complement Med. 2003, 9: 113-132. 10.1089/107555303321222991.
3. Smith R, Boericke GW: Modern instrumentation for the evaluation of homeopathic drug structure. J Am Inst Homeopath. 1966, 59: 263-280.
4. Smith R, Boericke GW: Changes caused by succussion on NMR patterns and bioassay of bradykinin triacetate succussions and dilutions. J Amer Ins Hom. 1968, 61: 197-212.
5. Young TM: NMR studies of succussed solutions: a preliminary report. J Amer Inst Hom. 1975, 68: 8-16.