The accounts记述 · the ancient witnesses
Greek historians · 希腊史家
Cassius Dio — Roman History （卡西乌斯·狄奥·罗马史）primary source · 源典
§ 71
Roman History 71.2-71.3 — 'Vologaesus ... had begun the war by hemming in on all sides the Roman legion under Severianus'《罗马史》71.2-71.3——“沃洛盖苏斯……先起战端，四面围困塞维里阿努斯统率的罗马军团”
Provenance: “primary source” = curated canonical witness (editorial); “dated witness” = derived from the ToposText date index by year-span, with the matched loci count. Sparse counts may include incidental mentions.出处：「源典」为校订之正典见证（编辑判断）；「系年见证」由 ToposText 系年索引按年代跨度推得，附匹配条目数；稀少者或含偶涉。
On the timeline时间轴上
→ See this and all 18 historians on the chronology spine于编年脊柱上一览本事件与全部 18 位史家