An endpoint Strichartz estimate in spherical coordinates
(with Yonggeun Cho and Gyeongha Hwang)
RIMS Kokyuroku Bessatsu B33 (2012), 49--57. (pdf-preprint)
Boundary singular sets for Stokes equations, with Hi Jun, Choi,
The Navier-Stokes equations: theory and numerical methods (Varenna, 2000),
167--177, Lecture Notes in Pure and Appl. Math., 223, Dekker, New York, 2002.