1. Biophotons: ultraweak light emission from living systems;Devaraj;Curr. Opin. Solid State Mater. Sci.,1997
2. From mitogenetic rays to biophotons;Voeikov,2007
3. Biophotons-background, experimental results, theoretical approach and applications;Popp,2003
4. F.A. Popp, Experimental investigations on ultraweak photon emission from biological systems, in: E.P. Schram, P. Stanley (Eds.), Proceeding of the International Symposium on Analytical Applications of Bioluminescence and Chemilumiscence, 1978, pp. 601–617.
5. F.A. Popp, About the coherence of biophotons, in: Boston University, MIT (Eds.), Proceeding of the International Conference on Macroscopic Quantum Coherence, World Scientific, 1999.