(1973). Physics letters, 1973, Vol.43B, No.01-06.
Chicago Edition CitationPhysics Letters, 1973, Vol.43B, No.01-06. North-Holland Physics Publishing Co., Amsterdam, 1973.
Cita MLAPhysics Letters, 1973, Vol.43B, No.01-06. 1973.
Atenció: Aquestes cites poden no estar 100% correctes.