George E. Andrews Davide Crippa Klaus Simon <i>q</i>-Series Arising From The Study of Random Graphs. 41-56 1997 10 SIAM J. Discrete Math. 1 http://epubs.siam.org/sam-bin/dbq/article/26249 db/journals/siamdm/siamdm10.html#AndrewsCS97