Av. Galajinsky et Dm. Gitman, On minimal coupling of the ABC superparticle to supergravity background - art. no. 047504, PHYS REV D, 5904(4), 1999, pp. 7504
By rigorous application of Hamiltonian methods we show that the ABC formula
tion of the Siegel superparticle admits consistent minimal coupling to exte
rnal supergravity. The consistency check proves to involve all the supergra
vity constraints. [S0556-2821(99)04202-2].