Institute of Physics (Great Britain), International Colloquium on Group Theoretical Methods in Physics Cocoyoc, Mexico, & Wolf, K. B. (1980). Group theoretical methods in physics: Proceedings of the IX International Colloquium on Group Theoretical Methods in Physics held in Cocoyoc, Mexico, 23-27 June 1980. Springer-Verlag.

Institute of Physics (Great Britain), Mexico International Colloquium on Group Theoretical Methods in Physics Cocoyoc, and Kurt Bernardo Wolf. Group Theoretical Methods in Physics: Proceedings of the IX International Colloquium on Group Theoretical Methods in Physics Held in Cocoyoc, Mexico, 23-27 June 1980. New York: Springer-Verlag, 1980.

Institute of Physics (Great Britain), et al. Group Theoretical Methods in Physics: Proceedings of the IX International Colloquium on Group Theoretical Methods in Physics Held in Cocoyoc, Mexico, 23-27 June 1980. Springer-Verlag, 1980.