APA Style
      VOLLMER, M. (2014).
    A Beta-return Efficient Portfolio Optimisation Following the CAPM: An Analysis of International Markets and Sectors .
    :
  Springer.
  
MLA Style
      VOLLMER, Markus.
    "A Beta-return Efficient Portfolio Optimisation Following the CAPM: An Analysis of International Markets and Sectors".
    
    :
  Springer,
  2014.
  Text.