Many of Prof. Harel's publications over the years are freely accessible online: http://www.wisdom.weizmann.ac.il/~harel/papers.html http://www.wisdom.weizmann.

Many of Prof. Harel's publications over the years are freely accessible online: http://www.wisdom.weizmann.ac.il/~harel/papers.html http://www.wisdom.weizmann.ac.il/~harel/papers.html