TY - RPRT TI - Characterization of calculus matrix calcification nucleator. AU - J Ennever AU - J J Vogel AU - B Boyan-Salyers AU - L J Riggan PY - 1979 DO - 10.1177/00220345790580021401 UR - https://pubmed.ncbi.nlm.nih.gov/283092/ ID - 283092 ER -