1. The multiple charms of Pascal's triangle;Gardner;Scientific American,1966
2. Five easy pieces for a do loop and random-number generator (Computer Recreations);Dewdney;Scientific American,1985
3. Recursions associated with Pascal's pyramid;Mueller;Pi Mu Epsilon J,1969
4. The Pascal pyramid;Staib;Mathematics Teacher,1978
5. Mathematical Snapshots;Steinhaus,1938