“Transgenic plant pesticides: fate and persistence in soil”
, Scientific Program for Meeting of the American Society of Plant Physiologists
, vol. 102 (1). p. 386, 1993.
“Detection in the environment of pesticidal compounds produced by transgenic plants”
, Proceedings of the Biotechnology Risk Assessment Symposium
. University of Maryland Publication #1001, Baltimore, Maryland, pp. 357-363, 1994.