This package is the backport of java.util.concurrent API, introduced in Java 5.0 and further refined in Java 6.0, to older Java platforms. The backport is based on public-domain sources from the JSR 166 CVS repository, the dl.util.concurrent package, and
V. Kahlon. LICS '08: Proceedings of the 2008 23rd Annual IEEE Symposium on Logic in Computer Science, стр. 181--192. Washington, DC, USA, IEEE Computer Society, (2008)