658.8
L484M
           Leeflang, Pieter Samuel Hendrik
               Mathematical models in marketing a survey, the stage of development, some extensions and applications \ Pieter Samuel Hendrik Leeflang - Leiden : H E Stenfert Kroese, 1974.
               vii, 216p.                 Subjects: Marketing-Management; Marketing-Mathematical models; Marketing-Decision-Making; Consumer behavior.