Paraffin coated rubidium cell with an internal atomic vapor source Sergej N. Atutov, Aleksandr I. Plekhanov, Vladimir A. Sorokin, Sergej N. Bagayev, Mihail N. Skvortsov and Aleksey V. Taichenachev Eur. Phys. J. D, 72 9 (2018) 155 Published online: 13 September 2018 DOI: 10.1140/epjd/e2018-90127-6