1. Moorland recreation and wildlife in the Peak District;Anderson,1988
2. Gulls and Plovers: The Ecology and Behaviour of Mixed-species Feeding Groups;Barnard,1985
3. Time-activity budget for breeding greater golden plovers in Norwegian mountains;Byrkjedal;Wilson Bull.,1985
4. The impact of tourism upon some breeding wader species on the isle of Vlieland in The Netherlands' Wadden Sea;de Roos;Med. Landbouwhogeschool, Wageningen,1981