An Object-Oriented Class Library for C++ Programs. - Keith E. Gorlen (Softw. Pract. Exp., 1987)

Data abstraction and object-oriented programming in C++. - Keith E. Gorlen; Sanford M. Orlow; Perry S. Plexico (Wiley, 1990)

How Useful is Multiple Inheritance in C++? - Andrew Koenig; Thomas A. Cargill; Keith E. Gorlen; Robert B. Murray; Michael Vilot (C++ Conference, 1991)