Chavdar Botev Hubert Chao Theodore Chao Yim Cheng Raymond Doyle Sergey Grankin Jon Guarino Saikat Guha Pei-Chen Lee Dan Perry Christopher Re Ilya Rifkin Tingyan Yuan Dora Abdullah Kathy Carpenter David Gries Dexter Kozen Andrew C. Myers David I. Schwartz Jayavel Shanmugasundaram Supporting workflow in a course management system. 262-266 2005 conf/sigcse/2005 SIGCSE http://doi.acm.org/10.1145/1047344.1047439 db/conf/sigcse/sigcse2005.html#BotevCCCDGGGLPRRYACGKMSS05