| article html file updated | 30 August 2025 03:32 CEST | Update | https://www.mdpi.com/2227-7099/6/2/27 |
| article html file updated | 16 July 2022 10:49 CEST | Update | N/A |
| article html file updated | 9 February 2020 14:14 CET | Update | N/A |
| article html file updated | 2 October 2019 17:18 CEST | Update | N/A |
| article html file updated | 1 May 2019 02:41 CEST | Update | N/A |
| article html file updated | 17 April 2019 03:09 CEST | Update | N/A |
| article html file updated | 29 March 2019 16:37 CET | Update | N/A |
| article html file updated | 28 June 2018 08:45 CEST | Update | N/A |
| article html file updated | 19 April 2018 13:53 CEST | Original file | N/A |
| article xml uploaded. | 19 April 2018 13:52 CEST | Original file | https://www.mdpi.com/2227-7099/6/2/27/xml |
| article pdf uploaded. | 19 April 2018 13:52 CEST | Updated version of record | https://www.mdpi.com/2227-7099/6/2/27/pdf |
| article pdf uploaded. | 17 April 2018 16:52 CEST | Version of Record | https://www.mdpi.com/2227-7099/6/2/27/pdf-vor |