Selection without replacement from within strata with probability proportional to size (coautore P.M.Grundy, 1953)
selˈektjon witˈoʊt replatʃˈement frˈom wˈitin strˈata wˈit probabilˈitɪ proportjˈɔnal tˈo sˈitse koaʊtˈore pˈi.ˈɛmme.ɡrˈundɪ, mˈille novetʃˈɛnto tʃinkwˈantatrˈe