TY - RPRT TI - Ambient formaldehyde detection with a laser spectrometer based on difference-frequency generation in PPLN AU - Rehle, D. AU - Leleux, D. AU - Erdelyi, M. AU - Tittel, F. AU - Fraser, M. AU - Friedfeld, S. PY - 2001 UR - https://ntrs.nasa.gov/citations/20040087933 ID - 20040087933 ER -