Information technology. International standardized profile TAnnnn. Connection-mode transport service over connectionless-mode network service. Part 5. TA1111/TA1121 profiles including subnetwork-type dependent requirements for X.25 packet-switched data networks using virtual calls
State system for ensuring the uniformity of measurements. State verification schedule for measuring means of spectral, integral and reduced regular transmittance and optical density within the wavelength range from 0,2 to 50,0 um, diffused and regular reflections within the wavelength range from 0,2 to 20,0 um
