Connections between perturbation theory and the unitary transformation methods of deriving effective Hamiltonians von Westhaus, Paul

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The constrained variational formulation of energy functionals von Westhaus, Paul

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Constrained energy functionals obtained as solutions to a partial differential equation von WESTHAUS, P

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Connections between perturbation theory and the Van Vleck transformation: Illustrative calculations on the perturbed harmonic oscillator von Westhaus, Paul

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The thermodynamics of a two dimensional system of hard core electric dipoles von Westhaus, Paul

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Semiempirical effective Hamiltonians from a first principles’ viewpoint von Westhaus, Paul A.

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Cluster expansions of canonically transformed hamiltonians and effective interactions von Westhaus, Paul

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A two-dimensional gas of interacting electric dipoles with hard cores: Van der Waals isotherms and their possible application in lipid phase transitions von Westhaus, Paul A.

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Effective hamiltonians and the quasidegeneracy problem: Calculations on ethylene von Westhaus, Paul A.

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Normal modes of a two-dimensional lattice of interacting dipoles von Westhaus, Paul A.

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An effective Hamiltonian for the valence states of ethylene generated by canonical transformations von Westhaus, Paul, Moghtaderi, M.

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Structure and Symmetry Properties of Correlation Functions in the Sinanoğlu Nonclosed-Shell Many-Electron Theory von Westhaus, Paul

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First principles derivation of the effective valence shell Hamiltonian for large molecules von Westhaus, Paul, Bradford, Edward G., Hall, David

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Cluster Expansions in Many‐Fermion Theory. I. ``Factor‐Cluster'' Formalisms von Clark, John W., Westhaus, Paul

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A note on the importance of d orbitals in the calculation of effective interactions and the excitation spectra of atoms and molecules von Cherng, Sharon, Westhaus, Paul

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Tribute Biography Professor Herbert A. Pohl von Swamy, N.V.V.J., Westhaus, Paul A.

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Effective valence shell interactions in carbon, nitrogen, and oxygen atoms von Westhaus, Paul, Bradford, Edward G.

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Excitation spectra of atoms and small molecules using effective valence shell Hamiltonians generated by canonical transformations von Bradford, E. G., Westhaus, Paul

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Hydrogen bonds and masking in the sulfhydryl group in proteins von Westhaus, Paul A., Pohl, Herbert A.

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Cluster Expansions in Many‐Fermion Theory. II. Rearrangements of Primitive Decomposition Equations von Westhaus, Paul, Clark, John W.

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