Dujella, A. "Diophantine Quadruples for Squares of Fibonacci and Lucas Numbers." Portugaliae Math.52, 305-318, 1995.Dujella,
A. "Generalized Fibonacci Numbers and the Problem of Diophantus." Fib.
Quart.34, 164-175, 1996.Morgado, J. "Note on Some Results
of A. F. Horadam and A. G. Shannon Concerning a Catalan's Identity on Fibonacci Numbers."
Portugaliae Math.44, 243-252, 1987.