V. Dobrica, C. Demetrescu, T. Mogi, Magnetic and electric properties of rocks as derived from long-term recordings of the geomagnetic field. Case studies: the network of European observatories and the Hokkaido array, Japan, Japan Earth and Planetary Science Joint Meeting, 9-13 May, Tokyo, Japan, 2004.
C. Demetrescu, M. Ene, V.Dobrica, Data from the Romanian repeat station network in the time interval 1980-2004, European Geophysical Union, 24-29 April, Vienna, Austria, 2005.
V. Dobrica, T. Mogi, C. Demetrescu, On the removing of external signals in data from the Hokkaido magnetometer array (Japan). Insights from the diurnal variation, International Association of Geomagnetism and Aeronomy, 17-30 July, Toulouse, France, 2005.
C. Demetrescu, V.Dobrica, New perspective on geomagnetic field sources and recent secular variation. Insights from long series of observatory data, International Association of Geomagnetism and Aeronomy, 17-30 July, Toulouse, France, 2005.
C. Demetrescu, V. Dobrica, M. Ene, Geomagnetic field evolution in Europe in the last 25 years based on observatory and repeat station data, International Association of Geomagnetism and Aeronomy, 17-30 July, Toulouse, France, 2005.
V. Dobrica, C. Demetrescu, C. Boroneant, On the relationship between geomagnetic activity and climatic parameters for Romania in the last 150 years, European Geophysical Union, 3-7 April, Vienna, Austria, 2006.
V. Dobrica, C. Demetrescu, C. Boroneant, Long-term temperature and precipitation variations in Romania. Correlation with the Atlantic Ocean variability, EGU General Assembly, Vienna-Austria, 02-07 April 2007.
V. Dobrica, H. Wilhelm, Heat and groundwater flow modeling in the litosphere of the Eastern Carpathians bend, XXIV IUGG General Assembly, Perugia, Italia, 02-14 Iulie 2007.
V. Dobrica, C. Demetrescu, On the 22-year variation seen in the observatory annual means of the geomagnetic field, XXIV IUGG General Assembly, Perugia, Italia, 02-14 Iulie 2007.
V. Dobrica, C. Demetrescu, G. Maris, C. Boroneant, Solar and geomagnetic forcing of climate changes during the instrumental period in Romania, 7th EMS Annual Meeting, San Lorenzo de El Escorial,Spania 1-5 Octombrie, 2007.
Dobrica V., Demetrescu, C., Mapping the secular variation. Significance of various trends in data. EGU, 13-19 aprilie, 2008, Viena, Austria.
Dobrica V., Demetrescu, C., Inferred lateral variation of magnetic and electric properties of the European crust and mantle from diurnal variation data. 33rd IGC, 6-14 august 2008, Oslo, Norway.
Dobrica V., Demetrescu, C., Large-scale european mantle electric structure as derived from ring current and geomagnetic observatory data. 11th Scientific Assembly of International Aeronomy and Geomagnetism Association (IAGA), 22-30 august 2009, Sopron, Ungaria.
Dobrica V., Demetrescu, C., Electromagnetic response of the European underground to
magnetospheric ring current variations. 11th Scientific Assembly of International Aeronomy and Geomagnetism Association (IAGA), 22-30 august 2009, Sopron, Ungaria.