Laser photoacoustic trace gas detection, an extremely sensitive technique applied in biological researchOn-line monitoring of nitrogenase activity in cyanobacteria by sensitive laser photoacoustic detection of ethyleneEffects of O2 on N2 fixation in heterocystous cyanobacteria from the Baltic SeaOn-line detection of root-induced volatiles in Brassica nigra plants infested with Delia radicum L. root fly larvaeNitrogenase activity in cyanobacteria measured by the acetylene reduction assay: a comparison between batch incubation and on-line monitoringLight action spectra of N2 fixation by heterocystous cyanobacteria from the Baltic Sea
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F.J.M. Harren