1. [1] R. Benedetti, C. Petronio, Branched spines and contact
structures on 3-manifolds, Ann. Mat. Pure Appl. (4), 178 (2000),
81–102.
2. [2] M. Endoh, I. Ishii, A new complexity for 3-manifolds, Japan. J.
Math. (N.S.), 31 (2005), 131–156.
3. [3] E. Giroux, Convexité en topologie de contact, Comm. Math. Helv.,
66 (1991), 637– 677.
4. [4] E. Giroux, Géométrie de contact: de la dimension trois vers les
dimensions supérieures, Proceedings of the International Congress of
Mathematicians, Vol. II (Beijing, 2002), 405– 414, Higher Ed. Press, Beijing,
2002.
5. [5] S. Handa, Construction of S-stable foliations on branched
standard spines, Master’s Thesis, Tohoku University, 2018 (in Japanese).