TITLE: Reference request: birational automorphism group is finite
QUESTION [9 upvotes]: I am interested in having a look at the proof of the following fact: If $X$ is a smooth variety of general type, then $\mathrm{Aut(X)}$ is finite.
I know that this is proved in "On algebraic groups of birational transformations" by Matsumura. Unfortunately, this paper is not available at the library of my institution, nor I could find it online. Could anyone point at a way to find such paper, or an alternative reference?

REPLY [7 votes]: See $\S$11.7 or more specifically Theorem 11.12 in Algebraic Geometry An Introduction to Birational Geometry of Algebraic Varieties by Shigeru Iitaka.