| article html file updated | 29 August 2025 21:32 CEST | Update | https://www.mdpi.com/1999-4915/7/2/751 |
| article html file updated | 15 July 2022 23:52 CEST | Update | N/A |
| article html file updated | 6 February 2020 15:59 CET | Update | N/A |
| article html file updated | 7 May 2019 00:55 CEST | Update | N/A |
| article html file updated | 25 March 2019 21:49 CET | Update | N/A |
| article html file updated | 21 August 2015 07:43 CEST | Update | N/A |
| article html file updated | 10 March 2015 03:30 CET | Original file | N/A |
| article xml file uploaded | 10 March 2015 03:30 CET | Original file | https://www.mdpi.com/1999-4915/7/2/751/xml |
| article pdf uploaded. | 16 February 2015 08:42 CET | Version of Record | https://www.mdpi.com/1999-4915/7/2/751/pdf |
