@article{chepurov2019spectroscopy, title={Spectroscopy of the quadrupole clock transition of ytterbium-171 ions for optical frequency standard development}, author={Chepurov, Sergei Vasil'evich and Lugovoy, Alexey Anatol'evich and Prudnikov, Oleg Nikolaevich and Taichenachev, Aleksei Vladimirovich and Bagayev, Sergei Nikolaevich}, journal={Quantum Electronics}, volume={49}, number={5}, pages={412}, year={2019}, publisher={IOP Publishing} }