| article html file updated | 8 February 2020 04:13 CET | Update | https://www.mdpi.com/2226-4787/5/2/22 |
| article html file updated | 24 September 2019 11:23 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:03 CEST | Update | N/A |
| article html file updated | 29 June 2017 12:45 CEST | Update | N/A |
| article html file updated | 23 April 2017 10:12 CEST | Original file | N/A |
| article xml uploaded. | 23 April 2017 10:11 CEST | Original file | https://www.mdpi.com/2226-4787/5/2/22/xml |
| article pdf uploaded. | 23 April 2017 10:11 CEST | Version of Record | https://www.mdpi.com/2226-4787/5/2/22/pdf |
