Special issue dedicated to Francisco Balibrea on the occasion of his 60th birthday. Preface

GARCÍA GUIRAO, Juan Louis - OPROCHA, Piotr - SNOHA, Ľubomír. Special issue dedicated to Francisco Balibrea on the occasion of his 60th birthday. Preface. In Journal of Difference Equations and Applications. - Abingdon : Taylor & Francis Group, 2012. ISSN 1023-6198, 2012, vol. 18, no. 4, pp. 531-533.