1. J. Lindhard, M. Scharff and H. E. Schiott, Kgl. Danske Videnskab., Mat.Fys.Medd.Dan.Vid.Selsk., 33, #14, 1963.
2. W. S. Johnson and J. F. Gibbons, “Projected Range Statistics in Semiconductors,” Stanford University Book Store, 1969.
3. S. Furukawa and H. Ishiwara, J. Appl. Phys., 43, #3, 1972.
4. L. O. Bauer, M. R. Macpherson, A. T. Robinson, and H. G. Dill, Solid State Electronics, 16, #3A, 1973.
5. International Symposium on Ion Implementation, Yorktown Heights, Dec. 11 through 14, 1972; unresolved problem of Rump Session.