M. de G. Caldera Cabral and V. V. Dvoeglazov
Chisholm-Caianiello-Fubini Identities for S=1 Barut-Muzinich-Williams Matrices
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ABSTRACT.  The formulae of the relativistic products are found S=1 Barut-Muzinich-Williams matrices. They are analogs of the well-known Chisholm-Caianiello-Fubini identities. The obtained results can be useful in 
the higher-order calculations of the high-energy processes 
with $S=1$ particles in the framework of the 2(2S+1) Weinberg 
formalism, which recently attracted attention again.