Mavromichalis, I.; Kropf, Donald H.; Kennedy, G.A.; Hines, Robert H.; Senne, B.W.; Kim, I.H.; Johnson, S.L.; Hancock, Joe D.(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-03-02)
Mancini, R.A.; Hunt, Melvin C.; Kropf, Donald H.; Hachmeister, K.A.(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-08-06)
Friesen, K.G.; Kats, L.J.; Kerr, B.J.; Nelssen, Jim L.; Goodband, Robert D.; Tokach, Michael D.; Unruh, John A.; Kropf, Donald H.(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-02)
Fitzner, G.E.; Nichols, David A.; Schricker, B.R.; Darden, D.E.; Weeden, T.L.; Goodband, Robert D.; Hines, Robert H.; Nelssen, Jim L.; Kropf, Donald H.(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-09)