| article html file updated | 8 February 2020 08:44 CET | Update | https://www.mdpi.com/2075-1729/7/2/28 |
| article html file updated | 25 September 2019 10:46 CEST | Update | N/A |
| article html file updated | 3 May 2019 16:36 CEST | Update | N/A |
| article html file updated | 30 June 2017 05:45 CEST | Update | N/A |
| article html file updated | 20 June 2017 14:35 CEST | Original file | N/A |
| article xml uploaded. | 20 June 2017 14:33 CEST | Original file | https://www.mdpi.com/2075-1729/7/2/28/xml |
| article pdf uploaded. | 20 June 2017 14:33 CEST | Version of Record | https://www.mdpi.com/2075-1729/7/2/28/pdf |
