Nummular headache: six new cases and lancinating pain attacks as possible manifestation. Ruscheweyh R, Buchheister A, Gregor N, Jung A, Evers S (2010) In: Cephalalgia, 30(2), 249-253. doi:10.1111/j.1468-2982.2009.01893.x Research article (journal) \| Published
Sumatriptan and ergotamine overuse and drug-induced headache: a clinicoepidemiologic study. Evers S, Gralow I, Bauer B, Suhr B, Buchheister A, Husstedt IW, Ringelstein EB (1999) In: Clinical Neuropharmacology, 22(4), 201-206. Research article (journal) \| Published