The Substitution Rule

Source (Author)

Link

Matthew Leingang (NYU)

Link

D. A. Kouba (UC Davis)

Link 1, 2, 3

Paul Dawkins (Lamar University)

Link 1, 2, 3

Doron Zeilberger (Rutgers University)

Link

Gregory L. Naber (Drexel University)

Link 1, 2

Daniel C. Sloughter (Furman University)

Link

Randell Simpson (Temple College)

Link