@article{334545, recid = {334545}, author = {Schilling, Govert.}, title = {The hunt for planet X : new worlds and the fate of Pluto /}, publisher = {Copernicus Books/Springer Science + Business Media,}, address = {New York :}, pages = {xiii, 303 p. :}, year = {2009}, url = {http://library.usi.edu/record/334545}, }