Abstract
It is stated that Lord in a recently published article (Int. J. Theor. Phys.; 5: No. 5, 349 (1972)) proves the equivalence of the massless field equations written down by Nelson & Good (Phys. Rev.; 179: 1445 (1969)) to those of Dirac. It is pointed out however that the entire analytical development, as well as the aforementioned equations, can be found in earlier work. (UK)
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