Direct potentiometric determination of sodium ion in blood. I: Potentiometric response in simple sodium chloride solutionsBIJSTER, P; VINK, K. L. J.Clinical chemistry (Baltimore, Md.). 1984, Vol 30, Num 1, pp 6-10, issn 0009-9147Article

Direct potentiometric determination of sodium ion in blood. II: Influence of cationsBIJSTER, P; VINK, K. L. J.Clinical chemistry (Baltimore, Md.). 1984, Vol 30, Num 6, pp 865-870, issn 0009-9147Article

Direct potentiometric determination of sodium ion in blood. III: Influence of (Bi) carbonateBOINK, F. T. J; BIJSTER, P; VINK, K. L. J et al.Clinical chemistry (Baltimore, Md.). 1985, Vol 31, Num 4, pp 523-526, issn 0009-9147Article

Direct spectrophotometry of bilirubin in serum of the newborn, with use of caffeine reagentVINK, K. L. J; SCHUURMAN, W; VAN GANSEWINKEL, R et al.Clinical chemistry (Baltimore, Md.). 1988, Vol 34, Num 1, pp 67-70, issn 0009-9147Article

Use of the caffeine reagent in direct spectrophotometry of bilirubinVINK, K. L. J; SCHUURMAN, W; VAN GANSEWINKEL, R et al.Clinical chemistry (Baltimore, Md.). 1986, Vol 32, Num 7, pp 1389-1393, issn 0009-9147Article

Molar absorptivities of blilrubin (NIST SRM 916a) and its neural and alkaline azopigmentsDOUMAS, B. T; PERRY, B. W; MCCOMB, R. B et al.Clinical chemistry (Baltimore, Md.). 1990, Vol 36, Num 9, pp 1698-1701, issn 0009-9147, 4 p.Article

A candidate standard for use in calibration of total bilirubin in serumVINK, K. L. J; VAN DREUMEL, R. J; SCHUURMAN, W et al.Clinical chemistry (Baltimore, Md.). 1987, Vol 33, Num 10, pp 1817-1821, issn 0009-9147Article