Elkins, R.B., Van Steenwyk, R.A., Varela, L.G., Pickel, C., Gubler, W.D., & Elmore, C.L. 2002 UC IPM Pest management guidelines: Pear.. Publication (University of California Cooperative Extension) 3455.

Notes: [http://www.ipm.ucdavis.edu/PDF/PMG/pmgpear.pdf, accessed February 2005.] Technical guidelines are provided for control of Diaspidiotus (Quadraspidiotus) perniciosus, Epidiaspis leperii, Pseudococcus maritimus and P. viburni as well as other insects and pests, diseases and weeds.