Neuffer, G. 1964a Zu den aussetzversuchen von Prospaltella perniciosi Tower (Hymenoptera, Aphelinidae) gegen die San José schildlaus (Quadraspidiotus perniciosus Comstock) in Baden-Württemberg.. Entomophaga 9: 131-136.

Notes: Title in English: [On release experiments with Prospaltella perniciosi Tower (Hymenoptera, Aphelinidae) against the San José scale (Quadraspidiotus perniciosus Comstock) in Baden-Württemberg.] Prospaltella perniciosi populations are measured, and other Quadraspidiotus perniciosus parasites are identified.