Nonlinear programming on generalized networks. - David P. Ahlfeld; John M. Mulvey; Ron S. Dembo; Stavros A. Zenios (ACM Trans. Math. Softw., 1987)

A New Interior-Point Boundary Projection Method For Solving Nonlinear Groundwater Pollution Control Problems. - Ann E. Mulligan; David P. Ahlfeld (Oper. Res., 2002)

Model reduction for combined surface water/groundwater management formulations. - Kevin Mulligan; David P. Ahlfeld (Environ. Model. Softw., 2016)