| article html file updated | 9 February 2020 02:17 CET | Update | https://www.mdpi.com/2075-5309/8/1/4 |
| article html file updated | 29 September 2019 17:51 CEST | Update | N/A |
| article html file updated | 2 May 2019 03:50 CEST | Update | N/A |
| article html file updated | 18 April 2019 01:57 CEST | Update | N/A |
| article html file updated | 28 March 2019 13:46 CET | Update | N/A |
| article html file updated | 1 February 2018 15:01 CET | Update | N/A |
| article html file updated | 8 January 2018 06:20 CET | Original file | N/A |
| article xml uploaded. | 8 January 2018 06:18 CET | Update | https://www.mdpi.com/2075-5309/8/1/4/xml |
| article pdf uploaded. | 8 January 2018 06:18 CET | Version of Record | https://www.mdpi.com/2075-5309/8/1/4/pdf |
