1. Akai, S., Horino, O., Fukutomi, M., Nakata, A., Kunoh, H., Shiraishi, M.: Cell wall reaction to infection and resulting change in cell organelles. In: Morphological and biochemical events in plant-parasite interaction (S. Akai, S. Ouchi, eds.), pp. 329?347) Japan: Mochizuki 1971
2. Armentrout, V. N., Wilson, C. L.: Haustorium-host interaction during mycoparasitism of Mycotypha microspora by Piptocephalis virginiana. Phytopathology 59, 897?905 (1969)
3. Benjamin, R. K.: The merosporangiferous Mucorales. Aliso 4, 321?453 (1959)
4. Bracker, C. E., Littlifield, L. J.: Structural concepts of host-pathogen interfaces. In: Fungal pathogenicity and the plant's response (R. J. W. Byrde, C. V. Cutting, eds.), pp. 159?318. London-New York: Academic Press 1973
5. Chou, C. K.: An electron-microscope study of host penetration and early stages haustorium formation of Peronospora parasitica (Fr.) Tul. on cabbage cotyledons. Ann. Bot. 34, 189?204 (1970)