TY  - BOOK
AU  - Joan C. Artés, Jaume Llibre, Dana Schlomiuk, Nicolae Vulpe
TI  - Geometric Configurations of Singularities of Planar Polynomial Differential Systems 
SN  - 9783030505707
PB  - Springer
UR  - https://link.springer.com/openurl?genre=book&isbn=978-3-030-50570-7
ER  -