| article html file updated | 9 February 2020 16:26 CET | Update | https://www.mdpi.com/2075-1702/6/2/20 |
| article html file updated | 3 October 2019 06:33 CEST | Update | N/A |
| article html file updated | 30 April 2019 22:21 CEST | Update | N/A |
| article html file updated | 16 April 2019 22:50 CEST | Update | N/A |
| article html file updated | 29 March 2019 21:56 CET | Update | N/A |
| article html file updated | 26 June 2018 05:34 CEST | Update | N/A |
| article html file updated | 8 May 2018 15:22 CEST | Original file | N/A |
| article pdf uploaded. | 8 May 2018 15:21 CEST | Updated version of record | https://www.mdpi.com/2075-1702/6/2/20/pdf |
| article xml uploaded. | 8 May 2018 15:21 CEST | Update | https://www.mdpi.com/2075-1702/6/2/20/xml |
| article xml file uploaded | 8 May 2018 15:21 CEST | Update | N/A |
| article pdf uploaded. | 4 May 2018 15:39 CEST | Updated version of record | N/A |
| article xml file uploaded | 4 May 2018 15:38 CEST | Original file | N/A |
