Byron Marshall René F. Reitsma Malinda Zarske Dimensional standard alignment in K-12 digital libraries: assessment of self-found vs. recommended curriculum. 11-14 2009 JCDL http://doi.acm.org/10.1145/1555400.1555403 conf/jcdl/2009 db/conf/jcdl/jcdl2009.html#MarshallRZ09