1. Response of apple seedlings to zinc fertilization and mycorrhizal inoculation;Benson;Hortscience,1977
2. Mycorrhizal infection and resistance to heavy metal toxicity in Calluna vulgaris;Bradley;Nature, Lond.,1981
3. Microdetermination of phosphorus;Chen;Analytical Chemistry,1956
4. Ultrastructural evidence relating to host-endophyte transfer in a vesicular—arbuscular mycorrhiza;Cox,1975
5. Heavy metal emission and genetic constitution of plant populations in the vicinity of two metal emission sources;Dueck;Angewandte Botanik,1984