Method of least squares and principles of the theory of observations / Translated from the Russian by Regina C. Elandt. Edited by N.L. Johnson. Linnik, I͡U. V. (I͡Uriĭ Vladimirovich), 1915-1972. Least squares. Mathematical statistics. QA275 .L513 519.8 LIM Includes Index. New York : Pergamon Press, c1961. c1961. 1961 Text 360 p. : eng engrus