TY  - JOUR
A1  - Schiefele, Ulrich
T1  - Motivation
Y1  - 2009
UR  - http://www.springerlink.com/content/x53x82/
SN  - 978- 3-540-88572 (print)
ER  - 
TY  - JOUR
A1  - Schiefele, Ulrich
T1  - Situational and individual interest
Y1  - 2009
ER  -