1. A generalized Fibonacci sequence;Horadam;Am Math Month,1961
2. Fibonacci-Tribonacci;Feinberg;Fibonacci Q,1963
3. On tribonacci numbers and related functions;Alladi;Fibonacci Q,1977
4. A formula for tribonacci numbers;McCarty;Fibonacci Q,1981
5. Binets's formula for the tribonacci sequence;Spickerman;Fibonacci Q,1982