Marsch, E., Tu, C.-Y., Wilhelm, K., Curdt, W., Schühle, U., & Dammasch, I. E. (1997). Bright plumes and dark lanes as observed in Mg X 625 Å and N V 1239 Å in the solar polar corona. In A., Wilson (Ed.), Proc. Fifth SOHO Workshop ``The Corona and Solar Wind Near Minimum Activity'', Oslo (pp. 555-560). Noordwijk: ESA Publ. Div.