| article html file updated | 9 February 2020 19:41 CET | Update | https://www.mdpi.com/2076-0787/7/2/55 |
| article html file updated | 30 April 2019 15:10 CEST | Update | N/A |
| article html file updated | 16 April 2019 15:43 CEST | Update | N/A |
| article html file updated | 30 March 2019 06:10 CET | Update | N/A |
| article html file updated | 31 May 2018 10:45 CEST | Original file | N/A |
| article pdf uploaded. | 31 May 2018 09:59 CEST | Version of Record | https://www.mdpi.com/2076-0787/7/2/55/pdf |
| article xml uploaded. | 31 May 2018 09:59 CEST | Update | https://www.mdpi.com/2076-0787/7/2/55/xml |
| article xml file uploaded | 31 May 2018 09:59 CEST | Original file | N/A |
