Around Goedel's Theorem
by Karlis Podnieks, Dr.Math., University of Latvia

Survey of Venn Diagrams
by Frank Ruskey and Mark Weston, Dept. of Computer Science, University of Victoria in British Columbia, has some surprising information on the richness of Venn diagrams. Students really like the fine colour drawings.

Dos software for Venn diagrams
from the University of Arizona.