TY  - BOOK
AU  - De Figueiredo,  Djairo G
TI  - Analysis and topology in nonlinear diffrential equations: a tribute to bernhard ruf on the occasion of his 60th borthday
SN  - 9783319042138
CY  - New York
PB  - Birkhauser
KW  - Nonlinear diffrential equations
ER  -