Self assembled monolayers versus iron oxide nanoparticles modified surfaces: Two functionalization strategies for femtomolar detection of prostate specific antigen: Comparative study between two electrochemical biosensors for femtomolar detection of prostate specific antigen. - Nesrine Blel; Nourdin Yaakoubi; Asma Omezzine; Najla Fourati; Chouki Zerrouki; Ali Othmane; Mina Souiri (IEEE SENSORS, 2016)