Chapters by Dr. Ján Kovaľ

• Book Chapter Breast Cancer and Current Therapeutic Approaches: From Radiation to Photodynamic Therapy
  by Peter Ferenc, Peter Solár, Jaromír Mikeš, Ján Kovaľ and Peter Fedoročko in the book "Breast Cancer - Current and Alternative Therapeutic Modalities" edited by Esra Gunduz and Mehmet Gunduz, ISBN 978-953-307-776-5, InTech, November 11, 2011