Wiehr, E., Stellmacher, G., de Boer, C. R., & Suetterlin, P. (1998). Prominence emissions with SUMER and optical telescopes. In C. E., Alissandrakis, & B., Schmieder (Eds.), 2nd ASP Euroconference, Preveza, Greece, 7-11 October 1997 (pp. 331-335).