Freund, A. Advances in X-Ray Optics. SPIE Digital Library.
Cita Chicago (17th ed.)Freund, Andreas. Advances in X-Ray Optics. SPIE Digital Library.
Cita MLA (9th ed.)Freund, Andreas. Advances in X-Ray Optics. SPIE Digital Library.
Atenció: Aquestes cites poden no estar 100% correctes.