1. Pumps and pump units for liquids – spare parts – selection and procurement;DIN 24296:1998-01,1998
2. End-Suction Centrifugal Pumps (Rating 16 Bar) – Designation, Nominal Duty Point and Dimensions (ISO 2858:1975); German Version EN ISO 2858:2010;DIN EN ISO 2858:2010,2011
3. Generation of an equipment module database — A maximum coverage problem;Eilermann;Chem. Eng. Res. Des.,2019
4. Centrifugal Pumps;Gülich,2010
5. Approximation Algorithms for NP-Hard Problems;Hochbaum,1997