Dear Friends and Colleagues,
We thank you again for the great contribution that you gave to the success of the Conference NETNA 2015.

We have the pleasure to inform you that IMACS and Elsevier have granted the publication of two special issues:

a special issue of Applied Numerical Mathematics

and a special issue of Mathematics and Computer in Simulation

The two issues have been necessary because the number of participants who intend to submit a paper far exceeds the expected number.

Both journals are prestigious but differ in the aims and scopes. For this reason we gently ask you to indicate a preference on the journal upon the submission. We will do everything possible to suit your choice. Nevertheless, should it be necessary, the Guest Editorial Board reserves the right to transfer papers between the two issues.

On this occasion we inform you that the limit for submission has been extended to November 15, 2015.

As a guidance, the page limit is set as follows:
- Plenary speakers 20 pages;
- Invited speakers 16 pages;
- Other speakers and poster presenters 13 pages.

If you have manifested the intention to submit a paper, please send the manuscript firstly in pdf form to the address netna2015@mat.unical.it we will then send you further information regarding the formal submission on the Elsevier website.