Assessing insularity in global science. - Richard J. Ladle; Peter A. Todd; Ana C. M. Malhado (Scientometrics, 2012)

Distanciation: a key challenge for 21st Century conservation. - Leticia Margarita Ochoa-Ochoa; Sandra Nogué; Rafa Devillamagallón; Richard J. Ladle (EnviroInfo/ICT4S (1), 2015)