I.E. Livieris and P. Pintelas. A new conjugate gradient algorithm for training neural networks based on a modified secant equation. *Applied Mathematics and Computation*, Volume 221, pp. 491-502, 2013.

I.E. Livieris and P. Pintelas. A new class of spectral conjugate gradient methods based on a modified secant equation for unconstrained optimization. *Journal of Computational and Applied Mathematics*, Volume 239, pp. 396-405, 2013.

I.E. Livieris, K. Drakopoulou and P. Pintelas. Predicting students` performance using artificial neural networks. *In the Proceedings of Information and Communication Technologies in Education*, 2012.

I.E. Livieris and P. Pintelas. Globally convergent modified Perry conjugate gradient method. *Applied Mathematics and Computation*, Volume 218, Number 18, pp. 9197-9207, 2012.

I.E. Livieris and P. Pintelas. An improved spectral conjugate gradient neural network training algorithm. *International Journal on Artificial Intelligence and Tools*, Volume 21, Number 1, 2012.

I.E. Livieris and P. Pintelas. A descent Dai-Liao conjugate gradient method based on a modified secant equation and its global convergence. *ISRN Computational Mathematics*, 2012.

I.E. Livieris and P. Pintelas. An advanced conjugate gradient training algorithm based on a modified secant equation. *ISRN Artificial Intelligence*, 2012.

I.E. Livieris, D.G. Sotiropoulos and P. Pintelas. On descent spectral CG algorithms for training recurrent neural networks. In *Proceedings of 13th Panellenic Conference on Informatics (PCI`09)*, Corfu, pp. 65-69, 2009.

I.E. Livieris, D.G. Sotiropoulos, M.S. Apostolopoulou, S.A. Sioutas and P. Pintelas. Classification of large biomedical data using ANNs based on BFGS method. In *Proceedings of 13th Panellenic Conference on Informatics (PCI`09)*, Corfu, pp. 87-91, 2009.

I.E. Livieris and P. Pintelas. Performance evaluation of descent CG methods for neural network training. In *Proceedings of 9th Hellenic European Research on Computer Mathematics & its Applications Conference (HERCMA’09)*, Athens, 2009. Also included in *Hermis An International Journal of Computer Mathematics and its Applications*, Volume 11, pp. 40-46, 2009.

M.S. Apostolopoulou, D.G. Sotiropoulos, I.E. Livieris and P. Pintelas. A memoryless BFGS neural network training algorithm. In *Proceedings of 7th IEEE Internatio-nal Conference on Industrial Informatics (INDIN`09)*, Cardiff, U.K., pp. 216-221, 2009.

D.G. Sotiropoulos and I.E. Livieris. A greedy approach to transversal selection for nonlinear systems of equations. In *Proceedings of Conference in Numerical Analysis*, pp. 133-136, Kalamata, 2007.

I.E. Livieris and P. Pintelas. A modified Perry conjugate gradient method and its global convergence. *Optimization Letters*, Volume 218, pp. 9197-9207, 2014.

I.E. Livieris and P. Pintelas. A new class of nonmonotone conjugate gradient training algorithms. *Applied Mathematics and Computation*, Volume 266, pp. 404-413, 2015.

I.E. Livieris and P. Pintelas. A limited memory descent Perry conjugate gradient method. *Optimization Letters*, 2016.