TY - JOUR N2 - The summary of research activities concerning reference frames and reference networks performed in Poland in a period of 2011–2014 is presented. It contains the results of research on implementation of IUGG2011 and IAU2012 resolutions on reference systems, implementation of the ETRS89 in Poland, operational work of permanent IGS/ EUREF stations in Poland, operational work of ILRS laser ranging station in Poland, active GNSS station networks in Poland, maintenance of vertical control in Poland, maintenance and modernization of gravity control, and maintenance of magnetic control in Poland. The bibliography of the related works is given in references. L1 - http://www.czasopisma.pan.pl/Content/98372/PDF/Art-1_Bosy_Krynski.pdf L2 - http://www.czasopisma.pan.pl/Content/98372 PY - 2015 IS - No 2 DO - 10.1515/geocart-2015-0011 KW - reference system KW - reference frame KW - ETRS89 KW - vertical control KW - gravity control KW - magnetic control A1 - Jaroslaw Bosy A1 - Krynski, Jan PB - Commitee on Geodesy PAS VL - vol. 64 DA - 2015[2015.01.01 AD - 2015.12.31 AD] T1 - Reference frames and reference networks UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/98372 T2 - Geodesy and Cartography ER -