Torsten Hoefler, F. Lorenzen, D. Gregor and Andrew Lumsdaine:
	Topological Collectives for MPI-2 (MPI Forum, Feb. 2008) Documents download article:
	BibTeX
@techreport{hoefler-topocolls-mpi3,   author={Torsten Hoefler and F. Lorenzen and D. Gregor and Andrew Lumsdaine},   title={{Topological Collectives for MPI-2}},   institution={Open Systems Lab, Indiana University},   year={2008},   month={Feb.},   publisher={MPI Forum},   source={http://www.unixer.de/~htor/publications/}, }