| article html file updated | 30 August 2025 02:21 CEST | Update | https://www.mdpi.com/2227-9717/6/2/9 |
| article html file updated | 16 July 2022 08:44 CEST | Update | N/A |
| article html file updated | 9 February 2020 04:03 CET | Update | N/A |
| article html file updated | 30 September 2019 03:46 CEST | Update | N/A |
| article html file updated | 2 May 2019 00:09 CEST | Update | N/A |
| article html file updated | 17 April 2019 22:39 CEST | Update | N/A |
| article html file updated | 28 March 2019 17:45 CET | Update | N/A |
| article html file updated | 14 March 2018 14:49 CET | Update | N/A |
| article html file updated | 24 January 2018 02:24 CET | Original file | N/A |
| article xml uploaded. | 24 January 2018 02:22 CET | Update | https://www.mdpi.com/2227-9717/6/2/9/xml |
| article xml uploaded. | 23 January 2018 17:22 CET | Update | N/A |
| article xml uploaded. | 23 January 2018 17:22 CET | Original file | N/A |
| article pdf uploaded. | 23 January 2018 17:22 CET | Version of Record | https://www.mdpi.com/2227-9717/6/2/9/pdf |
