Chapters by Prof. Ahmet M. Öztaș

• Book Chapter The Tension over the Hubble-Lemaitre Constant
  by Michael L. Smith and Ahmet M. Öztaș in the book "Cosmology 2020 - The Current State" edited by Michael L. Smith, ISBN 978-1-83968-268-1, Print ISBN 978-1-83968-267-4, InTech, May 5, 2020
• Book Chapter A Polytropic Solution of the Expanding Universe – Constraining Relativistic and Non-Relativistic Matter Densities Using Astronomical Results
  by Ahmet M. Öztaş and Michael L. Smith in the book "Aspects of Today's Cosmology" edited by Antonio Alfonso-Faus, ISBN 978-953-307-626-3, InTech, September 9, 2011