1. The changing status of British Cantharidae;Alexander;The Coleopterist,1999
2. The Millennium Atlas of Butterflies in Britain and Ireland;Asher,2001
3. Changes in abundance of Himantoglossum hircinum (L.) Sprengel (Orchidaceae) over the last 100 years;Carey;Watsonia,1999
4. The Analysis of Binary Data;Cox,1970
5. Bias in butterfly distribution maps;Dennis;Journal of Insect Conservation,1999