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
DO WE REALLY NEED DARK MATTER
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES 320:1556 (1986) 465-473