Gruber E. R. PK effects on pre-recorded group behavior of living systems // European journal of parapsychology. 1980. № 3 (2). P. 167–175.
429
Snel F. W. J. J., Van der Sijde P. C. The effect of retro-active distance healing on babeia rodhani (rodent malaria) in rats // European journal of parapsychology. 1990. № 8. P. 123–130.
