Holomorphic symplectic normalization of a real function
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 19 (1992) no. 1, pp. 69-86. 
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     title = {Holomorphic symplectic normalization of a real function},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {69--86},
     publisher = {Scuola normale superiore},
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Webster, S. M. Holomorphic symplectic normalization of a real function. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 19 (1992) no. 1, pp. 69-86. http://archive.numdam.org/item/ASNSP_1992_4_19_1_69_0/

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