Año	Título	Autor/a
2013	On the approximate solution of D'Alembert type equation originating from number theory	Bouikhalene, Belaid; Elqorachi, Elhoucien; Charifi, A.; Sultan Moulay Slimane University. Morocco; Ibn Zohr University. Morocco
2013	A norm for Tsirelson's Banach space	Ojeda Aristizabal, Diana; Cornell University. USA
2013	A note on self-dual cones in Hilbert spaces	Jayaraman, Sachindranath; Indian Institute of Science Education and Research Thiruvananthapuram (IISER‐TVM). India
2013	On the Browder's theorem of an elementary operator	Lombarkia, F.; Zguitti, H.; University of Batna. Algeria; University of Mohammed I. Morocco
2013	On a generalization of Hankel operators via operator equations	Datt, Gopal; Aggarwal, Ritu; University of Delhi. India
2013	On extension of multi-parametric local semigroups of isometric operators and some applications	Bruzual, Ramón; Domínguez, Marisela; Pérez, A.; Universidad Central de Venezuela
2013	Several open problems in operator theory	Bermúdez, T.; González, M.; Pello, J.; Universidad de La Laguna; Universidad de Cantabria; Universidad Rey Juan Carlos