1. Gromov M. L., “A topological technique for the construction of solutions of differential equations and inequalities,” in: Actes Congrés Intern. Math. (Nice, 1970), Gauthier-Villars, Paris, 1971,2, pp. 221–225.
2. Tischler D., “Closed 2-forms and an embedding theorem for symplectic manifolds,” J. Differential Geom.,12, 229–235 (1977).
3. Thurston W., “Some simple examples of compact symplectic manifolds,” Proc. Amer. Math. Soc.,55, 467–468 (1976).
4. McDuff D., “Examples of symplectic simply connected manifolds with no Kähler structure,” J. Differential Geom.,20, 267–277 (1984).
5. Gompf R. E., “A new construction of symplectic manifolds,” Ann. of Math. (2),142, 527–595 (1995).