TY  - BOOK
AU  - Roubicek,T
TI  - Relaxation in optimization theory & variational calculus
T2  - De gruyter series in nonlinear analysis & applications 4
SN  - 3-11-014542-1
U1  - 515.3 
PY  - 1997///
CY  - Berlin
PB  - Walter de Gruyter
ER  -