por Workshop on Physical and Nonstandard Gauges (1989 : Viena) | Gaigg, P | Kummer, W.
por International Seminar on Theoretical Physics (10th. : 1979 : Jaca, España) | Alonso, José L [editor] | Tarrach, R.
por Khriplovich, I. B. (Iosif Bent︠s︡ionovich) [autor].