id: 70658998
dt: a
an: 70658998
au: Changuel, Sahar; Labroche, Nicolas
ti: Distinguishing defined concepts from prerequisite concepts in learning
    resources
so: CIDM, 22-29 (2011).
py: 2011
pu: 
la: EN
cc: 
ut: 
ci: 
li: doi:10.1109/CIDM.2011.5949296