Riahi, K. , Rietberg, M. , Perez, J. , Dijkstra, C. , Haken, B. , Alic, L.. "Effect of Changing Iron Content and Excitation Frequency on Magnetic Particle Imaging Signal: A Comparative Study of Synomag® Nanoparticles". World Academy of Science, Engineering and Technology, Open Science Index 173, International Journal of Chemical and Materials Engineering (2021), 15(5), 109 - 112.