1. Directive 97/68/EC of the European parliament and of the council - directives on emissions from non-road mobile machinery, December 16, 1997, with changes through directives 2001/63/EG, 2002/88/EG, 2004/26/EG.
2. Nonroad Compression-Ignition Engines: Exhaust Emission Standards;Agency,2016
3. Hybridization methodology based on DP algorithm for hydraulic mobile machinery - application to a middle size excavator;Casoli;Autom. Constr.,2016
4. Application of Power Regenerative Boom System to Excavator;Joo,2016
5. Performance analysis of hydraulic excavator powertrain hybridization;Wang;Autom. Constr.,2009