1. Abiko, K., 1978. Studies on specialization of parasitism ofSphaerotheca fuliginea (Schlecht.) Pollacci. I. Powdery mildew fungi parasitic on cucurbits, eggplant, edible burdock and Japanese butterbur. Ann. phytopath. Soc. Japan 44: 612–618.
2. Abiko, K., 1982a. Studies on the specialization of parasitism ofSphaerotheca fuliginea (Schlecht.) Pollacci. II. Powdery mildew fungi on flowering plants. Bulletin of the Vegetable and Ornamental Crops Research Station Japan, Series A, 10: 57–62.
3. Abiko, K., 1982b. Studies on the specialization of parasitism ofSphaerotheca fuliginea (Schlecht.) Pollacci. III. Powdery mildew fungi parasitic on weeds. Bulletin of the Vegetable and Ornamental Crops Research Station Japan, Series A, 10: 63–67.
4. Beyer, W.H., 1976. Handbook of tables for probability and statistics. CRC Press Inc., Cleveland, Ohio.
5. Blumer, S., 1967. Echte Mehltaupilze (Erysiphaceae). VEB Gustav Fisher Verlag, Jena.