Tengstrom, E., Teleki, G., Ohlsson, I., Teleki, G., & Ohlsson, I. (1979). Refractional influences in astrometry and geodesy: Symposium no. 89. Dordrecht ; Boston: D. Reidel.

Tengstrom, Erik, G. Teleki, I. Ohlsson, G. Teleki, and I. Ohlsson. Refractional Influences in Astrometry and Geodesy: Symposium No. 89. Dordrecht ; Boston: D. Reidel, 1979.

Tengstrom, Erik, et al. Refractional Influences in Astrometry and Geodesy: Symposium No. 89. Dordrecht ; Boston: D. Reidel, 1979.