1. An econometric analysis of paper and wastepaper markets ☆
    John A. Edgren, Kemper W. Moreland
    http://www.sciencedirect.com/science/article/pii/016505729090035H
2.Paper recycling: environmental and economic impact
   Stig Byströma, b, Lars LönnstedtCorresponding author contact information, b
   http://www.sciencedirect.com/science/article/pii/S0921344997000311

3Comment: Modeling the Supply of Wastepaper
  D Deadman  http://www.sciencedirect.com/science/article/pii/0095069681900620