@techreport{rfc-draft-pimsm,
  author = {Bill Fenner and Mark Handley and Hugh Holbrook and Isidor Kouvelas},
  title = {Protocol {I}ndependent {M}ulticast - {S}parse {M}ode {(PIM-SM)}: {P}rotocol {S}pecification ({R}evised)},
  type = {RFC},
  institution = {IETF},
  number = {4601},
  month = {August},
  year = {2006}
}