Bar-Ilan Univ., Ramat Gan, 1995. Roger Howe & Eng-Chye Tan, "Nonabelian harmonic analysis. Applications of SL(2,R)". Universitext. Springer-Verlag, New York, 1992. xvi+257 pp. . Roger Howe & William Barker (2007) Continuous Symmetry: From Euclid to Klein, American Mathematical Society, . Robin Hartshorne (2011) Review of Continuous Symmetry, American Mathematical Monthly 118:565–8. See also Oscillator semigroup References External links 1945 births Living people Members of the United States National Academy of Sciences 20th-century American mathematicians 21st-century American mathematicians Group theorists Harvard University alumni University of California, Berkeley alumni Yale University faculty Putnam Fellows Fellows of the American Mathematical Society Ithaca High School (Ithaca, New York) alumni