1. J. R. Villanueva and I. Garcia Acha, “Methods in Microbiology,” Vol. 4, ed. by C. Booth, Academic Press Inc., London and New York, 1971, p. 665.
2. J. F. Peberdy, “The Filamentous Fungi,” Vol. III, ed. by J. E. Smith and D. R. Berry, Edward Arnold Ltd., London, 1978, p. 119.
3. M. Gabriel, “Yeast Protoplasts,” ed. by O. Necas and A. Svoboda, University J. E. Purkyne Brno, Medical Faculty, 1970, p. 147.
4. J. G. H. Wessels, P. van der Valk and O. M. H. de Vries, “Microbial and Plant Protoplasts,” ed. by J. F. Peberdy, A. H. Rose, H. J. Rogers and E. C. Cocking, Academic Press Inc., London and New York, 1976, p. 267.
5. J. F. Peberdy, “Fungal Walls and Hyphal Growth,” University Press, Cambridge, London, New York and Melbourne, 1979, p. 49.