6Hohn ME, Liebhold AM, Gribko LS, 1993. A geostatistical model for forecasting the spatial dynamics of defoliation caused by the gypsy moth, Lymantria dispar ( Lepidoptera: Lymantriidae ).Environ. Entomol., 22:1 066- 1 077.
7Liebhold AM, Zhou G, Ravlin FW, Roberts A, Reardon R, 1998.Forecasting gypsy moth defoliation with a geographical information system. J. Econ. Entomol., 91: 464-472.
8Zhou G, Liebhold AM, 1995. Forecasting gypsy moth defoliation with a geographical information system. Entomologica Sinica, 2:83-94.