Mom technology and volumes of hyperbolic 3-manifolds
  This paper is the first in a series whose goal is to understand the structure of low-volume complete orientable hyperbolic 3-manifolds. Here we introduce Mom technology and enumerate the hyperbolic Mom-n manifolds for n <= 4. 
David Gabai (Princeton University), Robert Meyerhoff (Boston College),   Peter Milley (University of California at Riverside)