Robert D. Regan

发表

Robert D. Regan, 1972 .

Robert D. Regan, R. Regan, W. M. Davis, 1975 .

William J. Hinze, Robert D. Regan, R. Regan, 1977 .

William J. Hinze, Robert D. Regan, R. Regan, 1978 .