Baltay, C., G. Feinberg, N. Yeh, and R. Linsker.
Text: "Search for uncharged faster-than-light particles." Physics Review D. Particles and Fields. Series 3, 1(3), Feb. 1, 1970. p. 759-770.
See Also: tachyons, superluminal velocity, unorthodox physics, scalar electromagnetics.
Source: