Iron form and concentration affect nutrition of container-grown Pelargonium and Calibrachoa, Ron M. Wik, Paul R. Fisher, Dean A. Kopsell, William R. Argo
New Hampshire Agricultural Experiment Station Publications

Variation in Lutein, β-carotene, and Chlorophyll Concentrations among Brassica oleracea Cultigens and Seasons, Dean A. Kopsell, David E. Kopsell, Mark G. Lefsrud, Joanne Curran-Celentano, Laura E. Dukach
New Hampshire Agricultural Experiment Station Publications