Buffer gas-assisted four-wave mixing resonances in alkali vapor excited by a single cw laserSvetlana Shmavonyan, Aleksandr Khanbekyan, Alen Khanbekyan, Emilio Mariotti and Aram V. PapoyanEur. Phys. J. D, 70 12 (2016) 258DOI: https://doi.org/10.1140/epjd/e2016-70212-8