| article html file updated | 7 February 2020 21:31 CET | Update | https://www.mdpi.com/2226-4310/4/1/2 |
| article html file updated | 22 September 2019 21:39 CEST | Update | - |
| article html file updated | 4 May 2019 15:12 CEST | Update | - |
| article html file updated | 29 March 2017 05:54 CEST | Update | - |
| article html file updated | 22 January 2017 06:36 CET | Update | - |
| article xml uploaded. | 22 January 2017 06:35 CET | Update | https://www.mdpi.com/2226-4310/4/1/2/xml |
| article pdf uploaded. | 22 January 2017 06:35 CET | Updated version of record | https://www.mdpi.com/2226-4310/4/1/2/pdf |
| article html file updated | 14 January 2017 12:05 CET | Original file | - |
| article xml uploaded. | 14 January 2017 12:04 CET | Update | - |
| article xml uploaded. | 14 January 2017 12:04 CET | Original file | - |
| article pdf uploaded. | 14 January 2017 12:04 CET | Version of Record | https://www.mdpi.com/2226-4310/4/1/2/pdf-vor |
