Ervin Laszlo/ Ralph H. Abraham (FRW)
(1)
Ralph Abraham/ Jerrold E. Marsden/ Tudor Ratiu
(1)
Ralph H. Abraham (EDT)/ Yoshisuke Ueda (EDT)
(1)
Rupert Sheldrake/ Terence McKenna/ Ralph Abraham
(1)
Rupert Sheldrake/ Terence McKenna/ Ralph Abraham/ Jean Houston (FRW)
(1)