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Partially supported by the brazilian agencies: FAPESP, CNPq and FINEP.
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Júnior, P.F.d.S.P. On relative stability of function-germs. Bol. Soc. Bras. Mat 14, 99–108 (1983). https://doi.org/10.1007/BF02584861
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DOI: https://doi.org/10.1007/BF02584861