Multidimensional Cosmology with Multicomponent Perfect Fluid and Toda   Lattices
  The integration procedure for multidimensional cosmological models with multicomponent perfect fluid in spaces of constant curvature is developed. Reduction of pseudo-Euclidean Toda-like systems to the Euclidean ones is done. Some known solutions are singled out from those obtained. The existence of the wormholes is proved. 
V.R. Gavrilov, V. D. Ivashchuk and V. N. Melnikov