Femtosecond laser fabrication of high-Q whispering gallery mode microresonators via two-photon polymerization - Tomazio, Nathália Beretta; Otuka, Adriano J. G.; Almeida, Gustavo F. B.; Roselló-Mechó, Xavier; Andrés, Miguel V.; Mendonça, Cleber Renato (Journal of Polymer Science B, 2017)