T. Melgard, O. P. Ronningen and G. Verde, "A Novel PPP Disciplined Oscillator", The International Timing and Sync Conference (ITSF) 2020
O. P. Rønningen and M. Danielson, "A Novel PPP Disciplined Oscillator", 2019 Joint Meeting of the IEEE International Frequency Control Symposium (IFCS) and the SFMC European Frequency and Time Forum (EFTF)
T. Dunker, H. Hauglin and O. P. Rønningen, "On temporal correlations in high-resolution frequency counting", 2016 European Frequency and Time Forum (EFTF)(ArXiv)