Quasi-Newton methods for nonlinear eigenvalue problems:<br><br>
<a href="quasinewton-2017-02-28.tgz">quasinewton-2017-02-28.tgz</a> 

<br><br>If you find this useful, please consider citing:<br><br>

E. Jarlebring, A. Koskela, G. Mele,<br>
<i>Disguised and new Quasi-Newton methods for nonlinear eigenvalue problems</i><br>
2018, Numer. Algor. 

<br><br>
Implementations of methods are also available in <a href="https://github.com/nep-pack/nep-pack-alpha">NEP-PACK</a>.