Spectral Theory of Linear Differential Operators and Comparison AlgebrasH. O. Cordes, Heinz Otto Cordes, N. J. Hitchin₹5,152
The Canonical Operator in Many-Particle Problems and Quantum Field TheoryVictor P. Maslov, Oleg Yu Shvedov₹4,917
Multiple Integrals in the Calculus of Variations and Nonlinear Elliptic Systems. (Am-105), Volume 105Mariano Giaquinta₹4,570
Linear Partial Differential and Difference Equations and Simultaneous Systems with Constant or Homogeneous CoefficientsLuis Manuel Braga Da Costa Campos, Luís António Raio Vilela₹4,231