Affiliation: | 1Department of Statistics, The Ohio State University, 1958 Neil Avenue, Columbus Ohio 43210, U.S.A. 2Department of Mathematics, Cornell University, White Hall, Ithaca New York 14853, U.S.A. 3Statistical Engineering Division, National Institute of Standards and Technology, Gaithersburg Maryland 20899, U.S.A. 4Statistics Department, Marion Merrel Dow Inc., 10400 Hickman Mills Drive, Kansas City Missouri 64137, U.S.A. |