NITPACK: An Interactive Tree Package. - P. W. Gaffney; J. W. Wooter; K. A. Kessel; W. R. McKinney (ACM Trans. Math. Softw., 1983)

Algorithm 606: NITPACK: An Interactive Tree Package. - P. W. Gaffney; J. Wooten; K. A. Kessel; W. R. McKinney (ACM Trans. Math. Softw., 1983)

Numerical Approximation of Blow-Up of Radially Symmetric Solutions of the Nonlinear Schrödinger Equation. - Georgios Akrivis; Vassilios A. Dougalis; Ohannes A. Karakashian; W. R. McKinney (SIAM J. Sci. Comput., 2003)