@article{articleab32be5b,
title   = {Singularity theory and forced symmetry breaking in equations},
author = {Furter, Jacques-Elie and Ruas, Maria Aparecida Soares and Sitta, Angela Maria},
year = {2010},
doi = {10.5565/publmat_54210_01},
journal   = {Publicacions Matemàtiques}
}