Preparation theorems for systems
Journées équations aux dérivées partielles (1990), article no. 9, 10 p. 
@article{JEDP_1990____A9_0,
     author = {Dencker, Nils},
     title = {Preparation theorems for systems},
     journal = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {9},
     publisher = {\'Ecole polytechnique},
     year = {1990},
     doi = {10.5802/jedp.391},
     zbl = {0716.58006},
     mrnumber = {91g:32008},
     language = {en},
     url = {https://jedp.centre-mersenne.org/item/JEDP_1990____A9_0/}
}
Nils Dencker. Preparation theorems for systems. Journées équations aux dérivées partielles (1990), article  no. 9, 10 p. doi : 10.5802/jedp.391. https://jedp.centre-mersenne.org/item/JEDP_1990____A9_0/

1. N. Dencker, The propagation of polarization in double refraction, Report 1990:1, Dept. of Math., Univ. of Lund.

2. L. Hörmander, “The Analysis of Linear Partial Differential Operators I-IV”, Springer-Verlag, Berlin, 1983-1985. | Zbl 0601.35001

3. B. Malgrange, Le théorème de préparation en géométrie différentiable, Séminaire H. Cartan 15 (1962-1963). Exposés 11, 12, 13, 22. | Numdam | Zbl 0119.28501

4. B. Malgrange, The preparation theorem for differentiable functions, in “Differential Analysis”, Oxford University Press, London, 1964, pp. 203-208. | MR 32 #178 | Zbl 0137.03601

5. B. Malgrange, “Ideals of differentiable functions”, Oxford University Press, London, 1966. | Zbl 0177.17902

6. J. Mather, Stability of C∞ mappings : I. The division theorem, Ann. of Math. 87 (1968), 89-104. | MR 38 #726 | Zbl 0159.24902

7. L. Nirenberg, A proof of the Malgrange preparation theorem, Springer Lecture Notes in Math. 192 (1971), 97-105. | MR 54 #586 | Zbl 0212.10702

8. B. L. Van Der Waerden, “Algebra II”, 5 Aufl., Springer-Verlag, Berlin, 1967. | MR 38 #1968 | Zbl 0192.33002