category c1 Refereed Journal Article HERDC/ERA 2008/2009 pt.18/9/10; no copyright info; unable to locate cited version; related URL has the same article but different publication and pagination LV 9/12/10 URL [http://ajmaa.org/cgi-bin/paper.pl?string=v1n2/V1I2P7.tex] removed Lyn 8/12/11. verified 28.2.12-MMM. -- Generic Permission Form added to Dark Archive 09.11.20-MMM.