7International Organization for Standardization: ergonomics-evaluation of static working postures. International Standard ISO 11226-2000[S].
8International Organization for Standardization: ergonomics-manual handling Part 1: lifting and carrying. International Standard ISO 11228-1-2003[S].
9International Organization for Standardization: ergonomics-manual handling Part 2: pushing and pulling. International Standard ISO 11228-2-2007[S].
10International Organization for Standardization: ergonomics-manual handling Part 3: handling of low loads at high frequency. International Standard ISO 11228-3-2007[S].