Santos M. I., Tuzlakoglu K., Gomes M. E., Fuchs S., Unger R. E., Piskin E., Reis R. L., and Kirkpatrick C. J.,  "Nano- and micro-fiber combined scaffolds: An innovative design for improving endothelial cell migration in bone tissue engineering approaches",  Tissue Engineering, vol. 12, issue 4, pp. 986-987, 2006.