1. ISO 140–3:1995. Acoustics—Measurement of sound insulation in buildings and of building elements. Part 3. Laboratory measurements of airborne sound insulation of building elements.
2. AS 1191–1985. Acoustics–Method for laboratory measurement of airborne sound transmission loss of building partitions.
3. ASTM E90–90. Standard test method for laboratory measurement of airborne sound transmission loss of building partitions.
4. Kruopis, J. 1993.Matematinė statistika.411Vilnius: Mokslas.