Paula Catarino, Cecilia Costa, Maria Nascimento
      Note on Alto Douro's wine coopers's \phi
      International Mathematical Forum, Vol. 9, 2014, no. 4, 183-188
      http://dx.doi.org/10.12988/imf.2014.311213

Copyright © 2014 Paula Catarino, Cecilia Costa and Maria Nascimento. This article is distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.