G. Marinoschi. Springer, Dordrecht, The Netherlands. 2006. 316 pp. Hardcover. $89.95. ISBN 978-1-4020-4879-1.

The title of this book is intended to convey that it is devoted to illustrating the application of abstract methods from functional analysis to problems arising in the modeling of water flow in soils. In recent decades the need for increasingly sophisticated models for water flow in soils has led to correspondingly more difficult and interesting mathematical problems. The source of the mathematical difficulties is the extreme nonlinearity of the governing partial differential equations, that is, the two forms of the Richards equation, 
\[{\partial}_{\mathrm{t}}\mathrm{{\theta}}{=}\mathrm{{\nabla}}{\cdot}[D(\mathrm{{\theta}})\mathrm{{\nabla}{\theta}}]{+}{\partial}_{z}K(\mathrm{{\theta}})[1]\]
and 
\[C(h){\partial}_{t}h{=}\mathrm{{\nabla}}{\cdot}k(h)\mathrm{{\nabla}}h){+}{\partial}_{z}k(h)[2]\]
Equation...
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