id: 05416556 dt: j an: 05416556 au: Pfenning, Frank ti: Invited talk: Tri-directional type checking. so: Electron. Notes Theor. Comput. Sci. 70, No. 1 (2002). py: 2002 pu: Elsevier, Amsterdam la: EN cc: ut: ci: li: doi:10.1016/S1571-0661(05)80511-0