============================================== SPECIAL VOLUMES IN HONOUR OF FRANCIS BORCEUX AND OF DOMINIQUE BOURN ON THE OCCASION OF THEIR SIXTIETH BIRTHDAY Last year Francis Borceux and Dominique Bourn celebrated their 60th birthday, and an international meeting in their honour took place at the Royal Academy in Brussels last October (see http://www.math.ua.ac.be/bbdays/). We are glad to announce that there will be a Special Volume of the Cahiers de Topologie et Géométrie Différentielle Catégoriques dedicated to Francis Borceux, and a Special Volume of Theory and Applications of Categories dedicated to Dominique Bourn. Submission of papers on areas in which Francis Borceux and Dominique Bourn have worked are particularly encouraged. The deadline for submission for both volumes is 31 May 2009. Please find the instructions for submission of papers below. With our best wishes for the New Year, Jiri Adamek, Andrée Ehresmann, Marino Gran, George Janelidze, Rudger Kieboom, Jiri Rosicky, Walter Tholen and Enrico Vitale ================================================= - SPECIAL VOLUME FOR FRANCIS BORCEUX (CAHIERS): Please email your submission to Marino Gran (marino.gran@uclouvain.be) as an attached PDF file: you may suggest one of the Guest Editors Jiri Adamek Andrée Ehresmann Marino Gran George Janelidze Rudger Kieboom for this Special Volume to be assigned to your paper. Please be sure that you receive an e-mail acknowledging the receipt of your submission. All papers will be carefully refereed following the standards of Cahiers de Topologie et Géométrie Différentielle Catégoriques. ================================================ - SPECIAL VOLUME FOR DOMINIQUE BOURN (TAC): Please email your submission to Enrico Vitale (enrico.vitale@uclouvain.be) as an attached PDF file: you may suggest one of the Guest Editors Andrée Ehresmann George Janelidze Jiri Rosicky Walter Tholen Enrico Vitale for this Special Volume to be assigned to your paper. Please be sure that you receive an e-mail acknowledging the receipt of your submission. All papers will be carefully refereed following the standards of Theory and Applications of Categories.