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Dyfyniad Arddull ChicagoFreund, Andreas. X-Ray Mirrors, Crystals, and Multilayers. SPIE Digital Library.
Dyfyniad MLAFreund, Andreas. X-Ray Mirrors, Crystals, and Multilayers. SPIE Digital Library.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.