Noble, Ralph, Fermor, T. R., Lincoln, Suzanne, Dobrovin-Pennington, Andreja, Evered, Carol, Mead, A. (Andrew) and Li, R.. (2003) Primordia initiation of mushroom (Agaricus bisporus) strains on axenic casing materials. Mycologia, Vol.95 (No.4). pp. 620-629. ISSN 0027-5514