Llovera-González, J., Moreno-Yeras, A., Cruz-Arencibia, J., Serra-Toledo, R., Soga, D., AND Muramatsu, M.. "Nonlinear Dynamics in Speckle Patterns During the Transmission of Action Potential" Revista Cubana de Física [Online], Volume 31 Number 1E (15 December 2014)