TY - JOUR
AU - 
TI - Cognitive Computer Tutors: Solving the Two-Sigma Problem
JF - User Modeling 2001, Lecture Notes in Computer Science
DO - 10.1007/3-540-44566-8_14
DA - 2001-01-01
UR - https://www.deepdyve.com/lp/crossref/cognitive-computer-tutors-solving-the-two-sigma-problem-DDDtC0DmA2
SP - 137
EP - 147
DP - DeepDyve
ER -