Density and stability of Morse functions on a stratified space
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Serie 4, Volume 6 (1979) no. 4, p. 593-608 
@article{ASNSP_1979_4_6_4_593_0,
     author = {Pignoni, Roberto},
     title = {Density and stability of Morse functions on a stratified space},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 6},
     number = {4},
     year = {1979},
     pages = {593-608},
     zbl = {0432.58003},
     mrnumber = {563336},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1979_4_6_4_593_0}
}

Pignoni, Roberto. Density and stability of Morse functions on a stratified space. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Serie 4, Volume 6 (1979) no. 4, pp. 593-608. http://www.numdam.org/item/ASNSP_1979_4_6_4_593_0/

[1] R. Benedetti, Density of Morse functions on a complex space, Math. Ann. 229 (1977), pp. 135-139. | MR 457765 | Zbl 0354.32027

[2] E. Brieskorn, Examples of singular normal complex spaces which are topological manifolds, Proc. Nat. Acad. Sci. U.S.A., 55 (1966), pp. 1395-1397. | MR 198497 | Zbl 0144.45001

[3] F. Bruhat - H. Whitney, Quelques propriétés fondamentales des ensembles analytiques-réels, Comment. Math. Helv., 33 (1959), pp. 132-160. | MR 102094 | Zbl 0100.08101

[4] H. Cartan, Variétés analytiques réelles et variétés analytiques complexes, Bull, Soc. Math. France, 85 (1957), pp. 77-99. | Numdam | MR 94830 | Zbl 0083.30502

[5] H. Hironaka, Introduction to real-analytic sets and real-analytic maps, Istituto « L. Tonelli », Pisa, 1973. | MR 477121

[6] M. Hirsch, Differential topology, Springer, 1976. | MR 448362 | Zbl 0356.57001

[7] F. Lazzfri, Morse theory on singular spaces, Astérisque 7 et 8, 1973. | Zbl 0307.57014

[8] S. Łojasiewicz, Ensembles semi-analytiques, Preprint I.H.E.S., 1965.

[9] J. Mather, Notes on topological stability, Lecture Notes, Harvard University, 1970.

[10] J. Mather, Stratifications and mappings, Proceedings of the Dynamical Systems Conference, Salvador, Brazil, July 1971, Academic Press. | MR 368064 | Zbl 0286.58003

[11] J. Milnor, Morse theory, Princeton University Press, 1963. | MR 163331 | Zbl 0108.10401

[12] R. Narasimhan, Introduction to the theory of analytic spaces, Springer, 1966. | MR 217337 | Zbl 0168.06003

[13] H. Whitney, Tangents to an analytic variety, Ann. of Math., 81 (1965), pp. 496-549 | MR 192520 | Zbl 0152.27701