TY - JOUR AU - Paweł Żyliński TI - Orthogonal art galleries with holes: a coloring proof of Aggarwal's theorem JO - The electronic journal of combinatorics PY - 2006 VL - 13 UR - http://geodesic.mathdoc.fr/articles/10.37236/1046/ DO - 10.37236/1046 ID - 10_37236_1046 ER -