Extensions of closure spaces D. Deses | A. de Groot-Van der Voorde | E. Lowen-Colebunders | Show more D. Deses Belgium Vrije Universiteit Brussel Department of Mathematics A. de Groot-Van der Voorde Belgium Vrije Universiteit Brussel Department of Mathematics E. Lowen-Colebunders Belgium Vrije Universiteit Brussel Department of Mathematics Submitted: 2013-12-16 | Accepted: 2013-12-16 | Published: 2003-10-01 DOI: https://doi.org/10.4995/agt.2003.2028