Layer potentials on boundaries with corners and edges Thomas S. Angell; Ralph Ellis Kleinman; Josef Král — 1988 Časopis pro pěstování matematiky
Double layer potentials on boundaries with corners and edges Thomas S. Angell; Ralph Ellis Kleinman; Josef Král — 1986 Commentationes Mathematicae Universitatis Carolinae
Controllability of Urysohn integral inclusions of Volterra type. Angell, Thomas S.; George, Raju K.; Sharma, Jaita Pankaj — 2010 Electronic Journal of Differential Equations (EJDE) [electronic only]