J S Schendel

Estimating physical working capacity and training changes in the elderly at the fatigue threshold (PWCft).

H. Devries, H A deVries, G R Brodowicz, 1989, Ergonomics.

Atmospheric ammonia measurement using a VUV/photo-fragmentation laser-induced fluorescence technique.

J. Bradshaw, D. Davis, S. Sandholm, 1990, Applied optics.