Ivan M. Kislyakov, Inna M. Belousova, Svyatoslav Povarov, Ivan S. Sheiko, Alexander S. Konev, Daniil A. Lukyanov, Alexander F. Khlebnikov, "Free-base and metallated bis-tetraphenylporphyrin covalent ensembles for optical power limiting", 2014 International Conference Laser Optics, 2014, [DOI: 10.1109/lo.2014.6886384]