TY  - RPRT
TI  - A mathematical model for predicting toothbrush stiffness.
AU  - H R Rawls
AU  - N J Mkwayi-Tulloch
AU  - M E Krull
PY  - 1990
DO  - 10.1016/s0109-5641(05)80040-5
UR  - https://pubmed.ncbi.nlm.nih.gov/2079171/
ID  - 2079171
ER  -