%0 Journal Article %T Existence of Alternate Steady States in a Phosphorous Cycling Model %A Dagny Butler %A Sarath Sasi %A R. Shivaji %J ISRN Mathematical Analysis %D 2012 %I Hindawi Publishing Corporation %R 10.5402/2012/869147 %U http://dx.doi.org/10.5402/2012/869147