Peter B. Dixon, S. Bowles, David Kendrick, L. Taylor, M. Roberts
P. Morasso, V. Tagliasco
H. Schlötterer, M. Quillec, P.D. Greene, M. Bertolotti
N.G. Van Kampen
A.A. Fraenkel, Y. Bar-Hillel, A. Levy
P. van Geert
L.T. Watson, J.A. Ford, M. Bartholomew-Biggs
Dov M. Gabbay, Paul Thagard, John Woods, Mohan Matthen, Christopher Stephens
O.A. Oleinik, A.S. Shamaev, G.A. Yosifian
R. Frankiewicz, P. Zbierski
