Seven Roads to Roam: A Magical Journey
Homage to a Pied Puzzler
Farrell and Morrel's contribution to "Homage to a Pied Puzzler"
See "The ASTEROID Puzzle and Games" online at:
Version of record can be found through CRC Press.
Farrell, Jeremiah and Morrel, Judith H., "Seven Roads to Roam: A Magical Journey" Homage to a Pied Puzzler / (2009): 141-143.
Available at http://digitalcommons.butler.edu/facsch_papers/938