Design of graphical symbols for use in the technical documentation of products - Part 1: Basic rules (ISO 81714-1:2010); German version EN ISO 81714-1:2010— 22 стр.
Optics and photonics. Optical materials and components. Characterization of optical materials used in the infrared spectral range from 0,78 $Gmm to 25 $Gmm— 22 стр.