1. Beweis der Invarianz der Dimensionalzahl;Brouwer;Math. Ann.,1911
2. Set theoretic real analysis;Ciesielski;J. Appl. Anal.,1997
3. General Topology;Engelking,1989
4. Algebraic Topology: A First Course;Fulton,1995
5. Darboux like functions;Gibson;Real Anal. Exchange,1996