I would really suggest buying if you have the money though. Zen-On, Mus-T, and Kapustin himself all need the money so they can all keep publishing scores. Mus-T most especially needs the money, for they are in the LONG process of eventually publishing all of Kapustin's works, but have only done a small amount at a slow pace. But yes, I'm sure an ILL would suffice, but Kapustin's music might be hard to find in even the best libraries.