1. Spread of invading organisms;Andow;Landsc. Ecol.,1990
2. Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, National bureau of Standards;Abramowitz,1972
3. Circular Statistics in Biology;Batschelet,1981
4. Physical Chemistry;Barrow,1988
5. Spatial analysis of animal movements using a correlated random walk model;Bovet;J. Theor. Biol.,1988