Gomes S., Numata K., Leonor I. B., Mano J. F., Reis R. L., and Kaplan D. L.,  "AFM Study of Morphology and Mechanical Properties of a Chimeric Spider Silk and Bone Sialoprotein Protein for Bone Regeneration",  Biomacromolecules, vol. 12, issue 5, pp. 1675-1685 , doi:10.1021/bm2000605 , 2011.