| article html file updated | 8 February 2020 05:17 CET | Update | https://www.mdpi.com/2226-4310/4/2/28 |
| article html file updated | 24 September 2019 16:56 CEST | Update | - |
| article html file updated | 3 May 2019 23:06 CEST | Update | - |
| article html file updated | 28 June 2017 12:19 CEST | Update | - |
| article html file updated | 23 May 2017 03:50 CEST | Update | - |
| article html file updated | 8 May 2017 13:31 CEST | Original file | - |
| article xml uploaded. | 8 May 2017 13:30 CEST | Original file | https://www.mdpi.com/2226-4310/4/2/28/xml |
| article pdf uploaded. | 8 May 2017 13:30 CEST | Updated version of record | https://www.mdpi.com/2226-4310/4/2/28/pdf |
| article pdf uploaded. | 7 May 2017 10:44 CEST | Version of Record | https://www.mdpi.com/2226-4310/4/2/28/pdf-vor |
