(with Lora Billings) __On noninvertible mappings of the plane: eruptions__*,* Chaos **6** (1996), 108--120.

(with Martha N. Limber) __On the dynamics of shooting methods for solving Sturm-Liouville problems__*,* Comm. Appl. Nonlinear Anal. **1** (1994), 1--24.

(with Sharon L. Blish) __On the geometry of factorization algorithms__*,* Computational solution of nonlinear systems of equations, Lectures in Appl. Math. **26** (1990), 47--60.

__On zero finding methods of higher order from data at one point__*,* J. Complexity **5** (1989), 219--237.

(with Stuart L. Fiedler) __On the dynamics of Laguerre's iteration: $Z\sp n-1$__*,* Phys. **D 30** (1988), 124--134.

(with C. Eugene Wayne) __On the nonpathological behavior of Newton's method__*,* Fluids and plasmas: geometry and dynamics, Contemp. Math. **28** (1984), 407--418.

(with Lucy Garnett and Dennis Sullivan) __On the iteration of a rational function: computer experiments with Newton's method__*,* Comm. Math. Phys. **91** (1983), 267--277.

__On computing the entropy of the Hénon attractor__*,* J. Statist. Phys. **26** (1981), 683--695.

__On some systems motivated by the Lorenz equations: numerical results__*,* Mathematical problems in theoretical physics, Lecture Notes in Phys., **116** (1980), 316--330.

(with James A. Yorke) __A transition from Hopf bifurcation to chaos: computer experiments with maps on ${\bf R}\sp{2}$__*,* The structure of attractors in dynamical systems, Lecture Notes in Math. **668** (1978 ), 48--66.