D. M. J. M. Gerhardt, E. De Visser, B. W. Hendrickx, B. W. Schreurs, and J. L. C. Van Susante, “Bone mineral density changes in the graft after acetabular impaction bone grafting in primary and revision hip surgery”, ActaO, vol. 89, no. 3, pp. 302–307, May 2018.