Malik, Danish Shama, Gilbert Estimating bacterial surface contamination by means of ATP determinations: 20 pence short of a pound Estimating bacterial surface contamination by means of ATP determinations: 20 pence short of a pound untagged;Chemical Engineering not elsewhere classified 2012-11-28
    https://repository.lboro.ac.uk/articles/journal_contribution/Estimating_bacterial_surface_contamination_by_means_of_ATP_determinations_20_pence_short_of_a_pound/9242702