. "2012-02-23Z"^^ . . "2012Z"^^ . . . . . . . "1924Z"^^ . . "Sayre, David"@en . . "David Sayre"@en . "X-ray crystallographer" . . "1924-03-02Z"^^ . . "David Sayre (March 2, 1924 \u2013 February 23, 2012) was an American scientist, credited with the early development of direct methods for protein crystallography and of diffraction microscopy (also called coherent diffraction imaging)."@en . .