The principles of nonlinear optics / Y.R. Shen. Shen, Y. R. Nonlinear optics. QC446.2 .S54 1984 535.2 19 SHP Includes bibliographical references and index. New York : J. Wiley, c1984. c1984. 1984 Text xii, 563 p. : http://www.loc.gov/catdir/toc/onix01/83023259.html http://www.loc.gov/catdir/enhancements/fy0706/83023259-d.html eng