books.google.co.uk - Originally published in 1981, The Geometry of Random Fields remains an important text for its coverage and exposition of the theory of both smooth and nonsmooth random fields; closed form expressions for the various geometric characteristics of the excursion sets of smooth, stationary, Gaussian random...http://books.google.co.uk/books/about/The_geometry_of_random_fields.html?id=8a_-VEL7GUYC&utm_source=gb-gplus-shareThe geometry of random fields
