%0 Journal Article %A B. E. Okeke %A M. R. Roussel %T An Invariant-Manifold Approach to Lumping %J Mathematical modelling of natural phenomena %D 2015 %P 149-167 %V 10 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1051/mmnp/201510312/ %R 10.1051/mmnp/201510312 %G en %F MMNP_2015_10_3_a11