An L1 Penalty Method for General Obstacle Problems. - Giang Tran; Hayden Schaeffer; William M. Feldman; Stanley J. Osher (SIAM J. Appl. Math., 2015)

Stability of Serrin's Problem and Dynamic Stability of a Model for Contact Angle Motion. - William M. Feldman (SIAM J. Math. Anal., 2018)