| article html file updated | 8 February 2020 03:48 CET | Update | https://www.mdpi.com/2226-4310/4/2/22 |
| article html file updated | 24 September 2019 09:00 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:49 CEST | Update | N/A |
| article html file updated | 28 June 2017 12:18 CEST | Update | N/A |
| article html file updated | 18 April 2017 10:52 CEST | Original file | N/A |
| article xml uploaded. | 18 April 2017 10:50 CEST | Original file | https://www.mdpi.com/2226-4310/4/2/22/xml |
| article pdf uploaded. | 18 April 2017 10:50 CEST | Version of Record | https://www.mdpi.com/2226-4310/4/2/22/pdf |
