2006 Pistillate Flower Abortion and Ethylene Production in Walnut Johnson, H, J. Grant, V. Polito 2006.
2004 Walnut Pollination Dynamics: Pollen Flow and Pollen Loads in Walnut Orchards Polito, V.S., M. Aradhya, J. Dangl, H. Johnson, K. Pinney, Y. Vaknin 2004.
