WARPED AND TILTED GALACTIC DISKS
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 237:3 (1989) 785-798
THE DIFFUSION OF STARS THROUGH PHASE-SPACE
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 230:4 (1988) 597-627
ON THE FLATTENING OF DARK HALOES
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 226:1 (1987) 149-156