%0 Journal Article %A Friedrich, M. %A Pock, C. %A Torkar, K. %D 2017 %8 Array %P 78-84 %T Long-term trends in the D- and E-region based on rocket-borne measurements %V 163 %R 10.1016/j.jastp.2017.04.009 %J J. Atmos. Sol.-Terr. Phys.