G. Bergshoeff

Spectrophotometric determination of ozone in air with indigo disulphonate.

H. Reijnders, R. Lanting, G. Bergshoeff, 1984, The Analyst.

Improved neutral buffered potassium iodide method for ozone in air

H. Reynders, R. Lanting, G. Bergshoeff, 1980 .

Use of azure A instead of methylene blue for determination of anionic detergents in drinking and surface waters

G. Bergshoeff, W. D. Tonkelaar, 1969 .