Hello:

I would suggest that you first look at the following references:

1) The oldest reference probably: https://rivm.openrepository.com/bitstream/handle/10029/7038/huijbregts.pdf?sequence=1&isAllowed=y

2) Article Cumulative energy demand in LCA: the energy harvested approach

3) Article A framework for energy use indicators and their reporting in...

I will update my answer as and when I find more references.