Object-Oriented Implementation of Adaptive Mesh Refinement Algorithms. - William Y. Crutchfield; Michael L. Welcome (Sci. Program., 1993)

Approximate Projection Methods: Part I. Inviscid Analysis. - Ann S. Almgren; John B. Bell; William Y. Crutchfield (SIAM J. Sci. Comput., 2000)

A wideband fast multipole method for the Helmholtz equation in three dimensions. - Hongwei Cheng; William Y. Crutchfield; Zydrunas Gimbutas; Leslie Greengard; J. Frank Ethridge; Jingfang Huang; Vladimir Rokhlin; Norman Yarvin; Junsheng Zhao (J. Comput. Phys., 2006)