| article html file updated | 10 February 2020 23:50 CET | Update | https://www.mdpi.com/2075-4663/6/4/157 |
| article html file updated | 11 October 2019 02:47 CEST | Update | N/A |
| article html file updated | 28 April 2019 02:31 CEST | Update | N/A |
| article html file updated | 13 April 2019 22:33 CEST | Update | N/A |
| article html file updated | 2 April 2019 03:56 CEST | Update | N/A |
| article html file updated | 25 December 2018 04:25 CET | Update | N/A |
| article html file updated | 28 November 2018 10:17 CET | Original file | N/A |
| article pdf uploaded. | 28 November 2018 10:16 CET | Version of Record | https://www.mdpi.com/2075-4663/6/4/157/pdf |
| article xml uploaded. | 28 November 2018 10:16 CET | Update | https://www.mdpi.com/2075-4663/6/4/157/xml |
| article xml file uploaded | 28 November 2018 10:16 CET | Original file | N/A |
