Ferromagnetic resonance for the quantification of superparamagnetic iron oxide nanoparticles in biological materials - Gamarra, Lionel Fernel; Costa Filho, Antonio José da; Mamani, Javier Bustamante; Ruiz, Rita de Cassia; Pavon, Lorena F.; Sibov, Tatiana T.; Vieira, Ernanni D.; Silva, André C.; Pontuschka, Walter Maigon; Amaro Júnior, Edson (International Journal of Nanomedicine, 2010)