@misc{1992-montgomery-lucas
,note={URL: {\tt ftp://ftp.cwi.nl/pub/pmontgom/Lucas.ps.gz}}
,author={Peter L. Montgomery}
,title={{Evaluating recurrences of form $X_{m+n}=f(X_m,X_n,X_{m-n})$ via Lucas chains}}
,year={1992}
}