Manuel Abellanas António Leslie Bajuelos Inês Matos Some Problems Related to Good Illumination. 1-14 2007 conf/iccsa/2007-1 ICCSA (1) http://dx.doi.org/10.1007/978-3-540-74472-6_1 db/conf/iccsa/iccsa2007-1.html#AbellanasBM07