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Richard F. De Mar, An improved method of extracting square root, The Mathematics Teacher, Vol. 50, No. 6 (OCTOBER 1957), pp. 445-447 ...
Modified Square Root Method of Matrix Inversion A. E. Sarhan, B. G. Greenberg and Eleanor Roberts Technometrics , pp. 282-287 (6 pages) ...
Square root days happen only a few times in a century, and the man who brought the day fame is celebrating his sixth one.