Photoacoustic detection of C2H4 emission from germinating striga seeds F.J.M. Harren, H.S.M. de Vries, J. Reuss, J.W.J.F. Thuring, G.H.L. Nefkens and B. Zwanenburg J. Phys. IV France, 04 C7 (1994) C7-539-C7-542 DOI: 10.1051/jp4:19947127