Item from Mathematical Reviews (American Mathematical Society)--access
their stable url through the AMS database via an institutional library:
MR1978360 (2004b:05002) Iturriaga, Claudia; Lubiw, Anna Elastic labels
around the perimeter of a map. J. Algorithms 47 (2003), no. 1, 14--39.
(Reviewer: Sandra L. Arlinghaus) 05-04 (68U05)