| article html file updated | 8 February 2020 16:59 CET | Update | https://www.mdpi.com/2075-4663/5/4/72 |
| article html file updated | 27 September 2019 07:59 CEST | Update | N/A |
| article html file updated | 3 May 2019 00:26 CEST | Update | N/A |
| article html file updated | 2 January 2018 10:59 CET | Update | N/A |
| article html file updated | 23 September 2017 09:51 CEST | Original file | N/A |
| article xml uploaded. | 23 September 2017 09:50 CEST | Original file | https://www.mdpi.com/2075-4663/5/4/72/xml |
| article pdf uploaded. | 23 September 2017 09:50 CEST | Version of Record | https://www.mdpi.com/2075-4663/5/4/72/pdf |
