References

1. ``Tests of dichroic diplexer" M. Guélin, D. John, B. Lazareff (IRAM Report October 1989).

2. ``ATM, a program to compute theoretical atmospheric opacities for frequencies below 1000 GHz", J. Cernicharo (IRAM Report N 52, April 1985).

3. ''Observations at (sub)millimetre wavelengths: effect of atmosphere and telescope sidelobes", M. Guélin, NATO ASI Series, C, Vol. 359, p. 423 1991 (IRAM report N 223).

4. ``Meterological Conditions measured at the IRAM 30m Telescope", Greve, A., Penalver, J., Brunswig, W., LeFloch, B. 1991.

Michel GUELIN, Carsten KRAMER, Wolfgang WILD