1. G. Babis, E. C. Papadopoulos, P. Nikiforidis
    Shock in Orthopaedics. In: 4th I.C.U. Course; Shock.
    Editor: G. Baltopoulos
    Paschalidis Publications; Athens 2001
  2. E. C. Papadopoulos, G.S. Sapkas
    Growth and Metastasis of Musculoskeletal tumors. Chapter 1: p 15-26; In: Current Issues in Spinal Disorders; Editor: G. S. Sapkas.
    Kafkas Publications; Athens 2005
  3. E. C. Papadopoulos, G.S. Sapkas
    Pathogenesis of Scoliosis. Chapter 23: p 199-210; In: Current Issues in Spinal Disorders;
    Editor: G. S. Sapkas.
    Kafkas Publications; Athens 2005
  4. G.S. Sapkas, E Stylianesi, S. Papadakis, E. C. Papadopoulos, N. Gandaifis
    Surgical Treatment in Adult Scoliosis. Chapter 36, p 323-337; In: Current Issues in Spinal Disorders;
    Editor: G. S. Sapkas.
    Kafkas Publications; Athens 2005
  5. G. Babis, E. C. Papadopoulos, G.S. Sapkas
    The intervertebral disc. Chapter 13, p109-111. In: Biomechanics, pathophysiology and treatment of the Spine Disorders
    Editor: G. S. Sapkas.
    Kafkas Publications; Athens 2006
  6. G.Sapkas, L. Nikolakakos, E. Stylianesi, P. Mposkainos, EC Papadopoulos
    Spinal Stenosis. Chapter 39, p 346-355. In: Biomechanics, pathophysiology and treatment of the Spine Disorders;
    Editor: G. S. Sapkas.
    Kafkas Publications; Athens 2006