1. Araujo, C.: Rational curves of minimal degree and characterizations of projective spaces. Math. Ann. 335(4), 937–951 (2006)
2. Araujo, C., Castravet, A.-M.: Polarized minimal families of rational curves and higher Fano manifolds. Am. J. Math. 134(1), 87–107 (2012)
3. Barth, W., Peters, C., Van de Ven, A.: Compact Complex Surfaces, volume 4 of Ergebnisse der Mathematik und ihrer Grenzgebiete (3) [Results in Mathematics and Related Areas (3)]. Springer, Berlin (1984)
4. Bonavero, L., Casagrande, C., Druel, S.: On covering and quasi-unsplit families of curves. J. Eur. Math. Soc. (JEMS) 9(1), 45–57 (2007)
5. Cho, K., Miyaoka, Y., Shepherd-Barron, N.I.: Characterizations of projective space and applications to complex symplectic manifolds. In: Higher Dimensional Birational Geometry (Kyoto, 1997), volume 35 of Adv. Stud. Pure Math., pp. 1–88. Math. Soc. Japan, Tokyo (2002)