@inproceedings{ef10730c7dae4925bb94502bb23f267b,
title = "Resistance of lettuce to the aphid Nasonovia ribisnigri. Are electrical penetration graphs (EPGs) helpful to find the origin of resistance?",
author = "{van Helden}, M.",
year = "1990",
language = "English",
isbn = "9780897718363",
series = "Symposia Biologica Hungarica",
publisher = "Akad{\'e}miai Kiad{\'o}",
number = "39",
pages = "473--474",
editor = "{\'A}. Szentesi and T. Jermy",
booktitle = "Insects-Plants '89",
address = "Hungary",
}