Modern Economy
Vol.2 No.2(2011), Paper ID 4897, 8 pages
DOI:10.4236/me.2011.22017
Free Product as a Complement or Substitute for a Purchased Product – Does it Matter
Uriel Spiegel, Uri Benzion, Tal Shavit
Copyright © 2011 Uriel Spiegel, Uri Benzion, Tal Shavit et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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