1. [Ag] I. Agol, The virtual Haken conjecture. With an appendix by Agol, Daniel Groves, and Jason Manning. Doc. Math. 18 (2013), 1045–1087
2. [ABCKT] J. Amorós, M. Burger, K. Corlette, D. Kotschick and D. Toledo, Fundamental groups of compact Kähler manifolds. Mathematical Surveys and Monographs 44, American Mathematical Society, Providence, RI, 1996.
3. [Ar95] D. Arapura, Fundamental groups of smooth projective varieties. In: Current topics in complex algebraic geometry (Berkeley, CA, 1992/93), 1–16, Math. Sci. Res. Inst. Publ., vol. 28, Cambridge Univ. Press, 1995.
4. [ArNo] D. Arapura and M. Nori, Solvable fundamental groups of algebraic varieties and Kähler manifolds. Compositio Math. 116 (1999), 173–188.
5. [Ar] V. I. Arnold, Distribution of ovals of the real plane algebraic curves, the involutions of four-dimensional smooth manifolds, and the arithmetic of integral quadratic forms. Funkt. Anal. Prilozen 5 (1971), 1–9; English transl., Funct. Anal Appl. 5 (1972), 169–175