TY - RPRT TI - Four points function fitted and first derivative procedure for determining the end points in potentiometric titration curves: statistical analysis and method comparison. AU - S A Kholeif PY - 2001 DO - 10.2116/analsci.17.715 UR - https://pubmed.ncbi.nlm.nih.gov/11707941/ ID - 11707941 ER -