• M. Golubitsky and D. Tischler. A survey on the singularities and stability of differential forms. Asterisque. 59-60 (1978) 43-82. [PDF 1.2M]
• M. Golubitsky and D. Tischler. An example of moduli for singular symplectic forms. Inventiones Math. 38 (1977) 219-225. [Abstract] [PDF 247K]
• M. Golubitsky and D. Tischler. On the non-existence of globally stable forms. Proc. AMS. 58 (1976) 296-300. [Abstract] [PDF 142K]
• M. Golubitsky and D. Tischler. On the local stability of differential forms. Trans. AMS. 223 (1976) 205-221. [Abstract] [PDF 1.3M]