1. Aschenbrenner M, Friedl S and Wilton H, 3-manifold groups, arXiv: 1205.0202v3 (2013) 149 pages
2. Bandieri P, Cristofori P and Gagliardi C, A census of genus two 3-manifolds up to 42 coloured tetrahedra, Discret. Math. 310 (2010) 2469–2481
3. Bandieri P, Casali M R, Cristofori P, Grasselli L and Mulazzani M, Computational aspects of crystallization theory: complexity, catalogues and classification of 3-manifolds, Atti Sem. Mat. Fis. Univ. Modena 58 (2011) 11–45
4. Basak B and Datta B, Minimal crystallizations of 3-manifolds, Electron. J Comb. 21 (1) (2014) #P1.61, 1–25
5. Bondy J A and Murty U S R, Graph Theory: Graduate Texts in Mathematics (2008) (New York: Springer) xii+651 pages