G. P. Collins, Gauge-Invariant Rarita-Schwinger Interactions, M.Sc. Thesis, University of Canterbury (1985). (Unpublished.)
N. A. Doughty and G. P. Collins, J. Math. Phys. 27 (1986) 1639.
N. A. Doughty and G. P. Collins, J. Phys. A 19 (1986) L887.
G. P. Collins and N. A. Doughty, J. Math. Phys. 28 (1987) 448.
G. P. Collins, Phys. Rev. D 39 (1989) 1802.
G. P. Collins, Studies in String Theory, Ph.D. Thesis, SUNY at Stony Brook (1990).
G. P. Collins and W. I. Weisberger, J. Math. Phys. 32 (1991) 2890.