@article{1872, author = "Tengström, Erik and International Symposium on Terrestrial Electromagnetic Distance Measurements and Atmospheric Effects on Angular Measurements, Stockholm, 19 - 24 August 1974", title = "Appendix to Dr Tengström´s letter to Dr Brein, January 10 1968, concerning the influence of humidity on refractiondeterminations with the dual wavelength method ", year = "1974", note = "1 seš.", }