A. Monti, A. Alù, A. Toscano, and F. Bilotti. Design of Optical Circuit-Analog Absorbers Through Electrically Small Nanoparticles. Photonics, Special Issue on Metamaterials for Advanced Photonic and Plasmonic Applications – Selected Papers from Metamaterials’2018, 2019, 6, 1, 26. (invited paper)