Enabling collaborative geoinformation access and decision-making through a natural, multimodal interface. - Alan M. MacEachren; Guoray Cai; Rajeev Sharma; Ingmar Rauschert; Isaac Brewer; Levent Bolelli; B. Shaparenko; Sven Fuhrmann; Hongmei Wang (Int. J. Geogr. Inf. Sci., 2005)