1. Design of concrete structures. Part 1: General rules and rules for buildings,1991
2. Czech code ČSN 73 1201 Design of concrete structures.
3. Czech code ČSN 73 1371 Method of ultrasonic pulse testing of concrete.
4. Czech code ČSN 73 1315 Determination of volume mass, density, compactness and porosity of concrete.
5. Czech code ČSN 73 1317 Determination of compressive strength of concrete.