2013 Walnut Weed Control Research and Extension: Herbicide Efficacy, Crop Safety, and Glyphosate-Resistant Weed Management in Central Valley Walnut Orchards Hanson, Brad, Seth Watkins, Lynn Sosnoskie, Janine Hasey, David Doll, Elizabeth Fichtner, Marcelo Moretti, Andrew Johnson 2013.
2012 Thousand Cankers Disease And Walnut Twig Beetle in a Three-Year Old Orchard, Solano County DeBuse, Carolyn, Andrew Johnson, Stacy Hishinuma, Steve Seybold, Rick Bostock, Tatiana Roubtsova 2012.