D. Sierk

Fluoride uptake by enamel from zinc phosphate cement containing stannous fluoride.

S. Wei, D. Sierk, 1971, Journal of the American Dental Association.

Longitudinal changes in the dento-facial relationships of unilateral cleft lip and palate subjects.

S. Bishara, D. Sierk, K. Huang, 1979, The Cleft palate journal.