عنوان مقاله A Secure NFC Application for Credit Transfer Among Mobile Phones David M. Monteiro1, Joel J. P. C. Rodrigues1, and Jaime Lloret21 Instituto de Telecomunicações, University of Beira Interior, Portugal2 Integrated Management Coastal Research Institute, Universidad Politécnica de Valencia, Spaindavid.monteiro@it.ubi.pt, joeljr@ieee.org, jlloret@dcom.upv.es