Update README.md

Author: jbnsn

README.md

@@ -1,6 +1,6 @@
 # A most simple implementation of Kitzes (2013) in Python.
 
-The file [`main.py`](main.py) contains a most simple implementation of [Kitzes (2013)](https://doi.org/10.3390/resources2040489) in Python with the packages [NumPy](https://numpy.org/) and [Pandas](https://pandas.pydata.org/).
+The file [`kitzes-2013.py`](kitzes-2013.py) contains a most simple implementation of [Kitzes (2013)](https://doi.org/10.3390/resources2040489) in Python with the packages [NumPy](https://numpy.org/) and [Pandas](https://pandas.pydata.org/).
 
 > Kitzes, Justin. 2013. ‘An Introduction to Environmentally-Extended Input-Output Analysis’. Resources 2 (4): 489–503. [https://doi.org/10.3390/resources2040489](https://doi.org/10.3390/resources2040489).
 
@@ -15,7 +15,7 @@ _Note: [Pymrio](https://github.com/konstantinstadler/pymrio) is a comprehensive
 | Consumption-based   | Agriculture   | 4.80000                        | 4.711197 (98.15%)                  |
 | Consumption-based   | Manufacturing | 7.20000                        | 7.060348 (98.06%)                  |
 
-### Output of [`main.py`](main.py)
+### Output of [`kitzes-2013.py`](kitzes-2013.py)
 
 ```Txt
 >>> Leontief inverse-based results:
@@ -43,4 +43,4 @@ Manufacturing    7.060348
 dtype: float64
 ```
 
-[^1]: Calculated for the first eleven production layers (see [`main.py`](main.py)).
+[^1]: Calculated for the first eleven production layers (see [`kitzes-2013.py`](kitzes-2013.py)).