| article html file updated | 10 February 2020 22:09 CET | Update | https://www.mdpi.com/2076-0787/7/4/121 |
| article html file updated | 28 April 2019 06:13 CEST | Update | N/A |
| article html file updated | 14 April 2019 02:11 CEST | Update | N/A |
| article html file updated | 1 April 2019 23:18 CEST | Update | N/A |
| article html file updated | 19 November 2018 12:47 CET | Original file | N/A |
| article pdf uploaded. | 19 November 2018 12:46 CET | Version of Record | https://www.mdpi.com/2076-0787/7/4/121/pdf |
| article xml uploaded. | 19 November 2018 12:46 CET | Update | https://www.mdpi.com/2076-0787/7/4/121/xml |
| article xml file uploaded | 19 November 2018 12:46 CET | Original file | N/A |
