Oka Manifolds: From Oka to Stein and BackForstneric · Ann. Fac. Sci. Toulouse Math. (6), 22 (2013), no. 4, 747-8092012PDF
Oka Complements of Countable Sets and Non-elliptic Oka ManifoldsKusakabe · Proc. Amer. Math. Soc., 148(3):1233-1238, 20202019PDF
