We will add to this list below on a regular basis
An experimental assessment of native and naturalised species of plants as renewable sources o energy in Great Britain: Bracken - Pteridium aquilinum. Institute of Terrestrial Ecology, project 674, NERC Cumbria.
Pitman, R. (1994) Bracken as a Peat Substitute. Forestry Authority Research Station, Hampshire.
Potter, D. M. & Pitman, R. M. (1994) The extraction and characterisation of carcinogens from Bracken and the effect of composting. Forestry Authority Research Station, Hampshire & Menai Organics chemical laboratory, North Wales.
An investigation of the feasibility of preparing fuel pellets from a range of agricultural and other materials. Coed Cymru Product Development, Glasu Project GEO20.