On a possibility for the elimination of the non-physical consequences of the indefinite metric

N. N. Bogolyubov

I wish to draw attention to some very simple and, I must say, rather trivial possibilities of realizing Heisenberg's idea concerning the indefinite metric.

Henry Pierce Stapp

Renato Ascoli, Ettore Minardi

Rashmi Mehrotra, S. H. Patil

Miyatake, Osamu

Arkadiusz Jadczyk