@techreport{TechReport_1997_LANL_LA-13260-MS_SpriggsBusch,
  address = {Los Alamos, NM, USA},
  author = {Spriggs, G. D. and Busch, R. D.},
  institution = {Los Alamos National Laboratory},
  month = {January},
  number = {LA-13260-MS},
  title = {{On the Definition of Neutron Lifetimes in Multiplying and Nonmultiplying Systems}},
  year = {1997}
}