| article html file updated | 8 February 2020 18:01 CET | Update | https://www.mdpi.com/2078-2489/8/4/121 |
| article html file updated | 27 September 2019 15:07 CEST | Update | - |
| article html file updated | 2 May 2019 22:15 CEST | Update | - |
| article html file updated | 2 January 2018 13:34 CET | Update | - |
| article html file updated | 10 October 2017 10:27 CEST | Original file | - |
| article xml uploaded. | 10 October 2017 10:26 CEST | Original file | https://www.mdpi.com/2078-2489/8/4/121/xml |
| article pdf uploaded. | 10 October 2017 10:26 CEST | Version of Record | https://www.mdpi.com/2078-2489/8/4/121/pdf |
