1. Variational Principles and Free-Boundary Problems;Friedman,1982
2. An Introduction to Variational Inequalities and Their Applications;Kinderleher,1980
3. Weak and Variational Methods for Moving Boundary Problems;Elliot,1982
4. Free and Moving Boundary Problems;Crank,1984
5. Method for Solving Moving Boundary Value Problems for Linear Evolution Equations