| article html file updated | 7 February 2020 08:16 CET | Update | https://www.mdpi.com/2075-4450/7/2/20 |
| article html file updated | 5 May 2019 16:37 CEST | Update | N/A |
| article html file updated | 27 March 2019 03:54 CET | Update | N/A |
| article html file updated | 4 July 2016 10:36 CEST | Update | N/A |
| article html file updated | 6 May 2016 11:25 CEST | Original file | N/A |
| article xml uploaded. | 6 May 2016 11:23 CEST | Original file | https://www.mdpi.com/2075-4450/7/2/20/xml |
| article pdf uploaded. | 6 May 2016 11:23 CEST | Version of Record | https://www.mdpi.com/2075-4450/7/2/20/pdf |
