Principal Curvature and Harmonic Analysis
Allan Greenleaf
Indiana University Mathematics Journal
1981
text
pdf
10.1512/iumj.1981.30.30043
10.1512/iumj.1981.30.30043
en
Indiana Univ. Math. J. 30 (1981) 519 - 537
state-of-the-art mathematics
http://iumj.org/access/