The paper Nonlinear Symmetry Breaking in Symmetric Oligomers written by Mohsen Rahmani, Alexander S. Shorokhov, Ben Hopkins, Andrey E. Miroshnichenko, Maxim R. Shcherbakov, Rocio Camacho-Morales, Andrey A. Fedyanin, Dragomir N. Neshev, and Yuri S. Kivshar has been published in ACS Photonics.