Kovalev, O.V. 1973 Modern outlooks of biological control of weed plants in the U.S.S.R. and the International Phytophagous Exchange.. Miscellaneous Publication (Commonwealth Institute of Biological Control) No. 6: 166-172.

Notes: [Proceedings of the Second International Symposium on Biological Control of Weeds, Paul H. Dunn (Ed.), 4-7 October 1971, Rome, Italy.] The USSR is the first European country in which phytophages have become a biological control practice against weeds. Among the examples given are Neomargarodes chondrillae (Margarodes, Coccoidea) feeding on Chondrilla roots.