Scarabosio, A., Haas, G., Müller, H. W., Pugno, R., Wischmeier, M., & ASDEX Upgrade Team (2009). Measurements of neutral gas fluxes under different plasma and divertor regimes in ASDEX Upgrade. Journal of Nuclear Materials, 390-391, 494-497. doi:10.1016/j.jnucmat.2009.01.057.