Guskos N, Papadopoulos GJ, Likodimos V, Majszczyk J, Typek J, Wabia M, Grech E, Dziembowska T, Perkowska A, Aidinis K. Electronic structure of polycrystalline polyamine copper dinitrate complexes investigated by photoacoustic and electron paramagnetic resonance spectroscopy. Journal of Applied Physics [Internet]. 2001;90:1436-1441.