An application of time scales to economics. - Ferhan Merdivenci Atici; Daniel C. Biles; Alex Lebedinsky (Math. Comput. Model., 2006)

Nyström methods and singular second-order differential equations. - David Benko; Daniel C. Biles; Mark P. Robinson; John S. Spraker (Comput. Math. Appl., 2008)

Numerical approximation for singular second order differential equations. - David Benko; Daniel C. Biles; Mark P. Robinson; John S. Spraker (Math. Comput. Model., 2009)