Semmling, A. M. and Beyerle, G. and Stosius, R. and Dick, G. and Wickert, J. and Fabra, F. and Cardellach, E. and Ribo, S. and Rius, A. and Helm, A. and Yudanov, S. and d'Addio, S. (2011). Detection of Arctic Ocean tides using interferometric GNSS-R signals. Geophys. Res. Letters, L04103.

Semmling, M. and Helm, A. (2010). Bestimmung von Phasenkohaerenz und Referenzierung reflektierter GPS Signale zur Altimetrie. Entwicklerforum Geodaesie und Geoinformationstechnik

Fabra, F. and Cardellach, E. and Nogues-Correig, O. and Oliveras, S. and Ribo, S. and Rius, A. and Belmonte-Rivas, M. and Semmling, M. and Macelloni, G. and Pettinato, S. and Zasso, R. and d'Addio, S. (2010). Monitoring Sea-Ice and Dry Snow with GNSS Reflections. Proceedings of IEEE International Geoscience and Remote Sensing Symposium (IEEE-IGARSS)

R. Galas (1972). Conformal conic projections of an ellipsoid. Zeszyty Naukowe, 7-15.

R. Galas (1973). Earthquakes and polar motion. Postepy Astronomi, 335-342.

R. Galas (1976). On some analysis of filtered latitude variations. Proceedings of the 3rd International Symposium - Geodesy and Physics of the Earth, 569-574.

R. Galas (1977). On the mean latitude variations. Prace Naukowe Politechniki Warszawskiej, S. Geodesy

B. Kolaczek and R. Galas and M. Barlik and M. Dukwicz-Latka (1977). Variations of the differences of latitudes and of mean latitudes of stations located in the vicinity of a common meridian. Proceedings of the IAU Symposium No. 78, Nutation and the Earth's Rotation, 221-225.

R. Galas and J. Rogowski (1978). Analysis of nonpolar latitude variations at Jozefoslaw. VI National Seminar: Investigations of the Earth Rotation, 40-53.

R. Galas and B. Kolaczek (1978). Nonpolar variations of the latitude at Jozefoslaw. VI National Seminar: Investigations of the Earth Rotation

M. Barlik and R. Galas and J. Rogowski (1978). Variations of the geographical latitude at Jozefoslaw and their comparison with gravimetric observations. VI National Seminar: Investigations of the Earth Rotation, 65-71.

B. Kolaczek and R. Galas and M. Barlik and M. Dukwicz-Latka (1978). Investigations of local geophysical phenomena influence of differences between latitude and of mean latitudes of stations located in the vicinity of a common meridian in the period of years 1962-1975. Geodezja i Kartografia, 83-94.

R. Galas (1979). Geophysical interpretations of mean latitude variations. Geodezja i Kartografia, 163-178.

B. Kolaczek and R. Galas (1979). Influence of mean latitude variations on a spectrum of latitude variations. Mitteilung des Lohrman-Observatoriums der Technischen Universität Dresden

M. Barlik and R. Galas and J. Rogowski (1980). Variations of the geographical latitude at Jozefoslaw Observatory and their comparison with the gravimetrical determinations. Prace Naukowe Politechniki Warszawskiej, S. Geodesy, 33-43.