1. Ballard H.G. 1993 ‘Lean Construction and EPC Performance Improvement ’1st Annual Meeting of the International Group for Lean Construction Espoo Finland
2. Ballard H.G Howell G.A 1994 ‘Implementing lean construction: stabilizing workflow ’Catolica Universidad de Chile Santiago Chile
3. Futurebuilt 2020 ‘Kristian Augusts gate 23’Available at:https://www.futurebuilt.no/Forbildeprosjekter#!/Forbildeprosjekter/Kristian-Augusts-gate-232(Accessed 20.11.20)
4. Jurado M.C 2012 ‘Visual Planning in Lean Product Development‘ Available at:https://www.diva-portal.org/smash/get/diva2:600974/FULLTEXT01.pdf(Accessed on 10.01.21)