first draft

paper.bib

@@ -123,4 +123,18 @@ @article{Wernet:2016
 url = {http://link.springer.com/10.1007/s11367-016-1087-8},
 volume = {21},
 year = {2016}
-}
+}
+
+@article{Volkart:2018,
+author = {Volkart, Kathrin and C.L. Mutel and Panos, E.},
+doi = {10.1016/j.spc.2018.07.001},
+journal = {Sustainable Production and Consumption},
+pages = {121-133},
+title = {{Integrating life cycle assessment and energy system modelling:
+Methodology and application to the world energy scenarios}},
+url = {https://www.sciencedirect.com/science/article/pii/S235255091830071X?via%3Dihub},
+volume = {16},
+year = {2018}
+}
+
+

paper.md

@@ -101,14 +101,22 @@ production volume. For each technology, `pathways` retrieves the corresponding
 LCI dataset by looking it up in the mapping file (2 in Figure 1). The lookup
 indicates `pathways` which LCA matrices to fetch from the data package (3 in Figure 1).
 The LCA matrices are loaded in `bw2calc` (the LCA calculation module of `brightway`)
-and multiplied by the production volume (see 4 in Figure 1). Some post-processing
-is done on the inventory matrices (e.g., Monte Carlo iterations, dealing with
-double accounting, etc., see 5 in Figure 1) before the results are aggregated and saved in a
-dataframe (6 in Figure 1). Impacts are broken down per technology, region, time step,
-geographical origin of impact, life-cycle stage and impact assessment method.
+and multiplied by the production volume (see 4 in Figure 1). Some post-processing 
+is done on the inventory matrices, including dealing 
+with double accounting. For this purpose, the original LCI database is adjusted by 
+zeroing out all regional energy inputs that the energy system 
+model accounts for and might demand during the system's life cycle,
+following the same workflow presented in [@Volkart:2018] (see 5 in Figure 1). 
+Finally, the results are aggregated and saved in a dataframe, 
+where impacts are broken down per technology, region, time step,
+geographical origin of impact, life-cycle stage and impact assessment 
+method (6 in Figure 1).
 
 ![`pathways` workflow: from data package to impact assessment.\label{fig:workflow}](assets/workflow_diagram.png)
 
+A detailed [example notebook](https://github.com/polca/pathways/blob/main/example/example.ipynb) 
+is available for using `pathways` with a sample data package.
+
 # Impact
 
 By systematically updating and integrating LCA matrices over time, `pathways` improves the accuracy and relevance of