You're probably referring to this one:
Evaluating a Large Group Awareness Training: A Longitudinal Study of Psychosocial Effects, J.D. Fisher, R. C. Silver, J. M. Chinsky, B. Goff and Y. Klar, , Published by Springer-Verlag, October 1990, ISBN 0-387-97320-6.
this is a great article! No positive, no negative effects. Only further recruits for Landmark ( I don't k
Forum: Large Group Awareness Training, "Human Potential"