A Core Calculus of Classes and Mixins. - Viviana Bono; Amit Patel 001; Vitaly Shmatikov (ECOOP, 1999)

A Core Calculus of Classes and Objects. - Viviana Bono; John C. Mitchell; Amit Patel 001; Vitaly Shmatikov (MFPS, 1999)

Obstacl: a language with objects, subtyping, and classes. - Amit Patel 001 (2001)