1. U. Abraham, Lectures on proper forcing, in Handbook of Set Theory, (M. Foreman A. Kanamori and M. Magidor, eds.).
2. B. Balcar and P. Simon, Disjoint refinement, in Handbook of Boolean algebras, volume 2, North-Holland, Amsterdam, 1989, pp. 333–388.
3. E. T. Brown, Tree Forcing at Uncountable Cardinals, Talk at Boise Extravaganza In Set Theory, March 29–31, 2002.
4. E. T. Brown, Tree Forcing at Uncountable Cardinals, Preprint.
5. J. Cummings and S. Shelah, Cardinal invariants above the continuum, Annals of Pure and Applied Logic 75 (1995), 251–268.