↩ 🔵 🔵 🔵 ❪📖❫ High-Energy Astrophysics Texts ○ ❪📖-❫ Floating Texts ○ An X-ray Data Primer ⚬𓂃 Diploma Thesis of Manfred Hanke ⚬𓂃 X-Ray Spectroscopy ∶ In Theory and Practice ⚬𓂃