@techreport{devillers:hal-00758631, TITLE = {{Qualitative Symbolic Perturbation: a new geometry-based perturbation framework}}, AUTHOR = {Devillers, Olivier and Karavelas, Menelaos and Teillaud, Monique}, URL = {https://hal.inria.fr/hal-00758631}, TYPE = {Research Report}, NUMBER = {RR-8153}, YEAR = {2012}, KEYWORDS = {Degeneracies ; Robustness issues ; Apollonius diagram ; Trapezoidal map ; Degeneracies ; Robustness issues ; Apollonius diagram ; Trapezoidal map.}, HAL_ID = {hal-00758631}, HAL_VERSION = {v3}, }