Submanifolds in five-dimensional pseudo-Euclidean spaces and   four-dimensional FRW universes
  Equations for submanifolds, which correspond to embeddings of the four-dimensional FRW universes in five-dimensional pseudo-Euclidean spaces, are presented in convenient form in general case. Several specific examples are considered. 
Igor E. Gulamov, Mikhail N. Smolyakov
gr-qc