| article html file updated | 29 August 2025 22:32 CEST | Update | https://www.mdpi.com/1424-2818/8/1/2 |
| article html file updated | 16 July 2022 01:31 CEST | Update | N/A |
| article html file updated | 7 February 2020 02:49 CET | Update | N/A |
| article html file updated | 6 May 2019 03:43 CEST | Update | N/A |
| article html file updated | 26 March 2019 17:26 CET | Update | N/A |
| article html file updated | 29 March 2016 07:37 CEST | Original file | N/A |
| article pdf uploaded. | 8 January 2016 10:48 CET | Updated version of record | https://www.mdpi.com/1424-2818/8/1/2/pdf |
| article xml uploaded. | 8 January 2016 10:48 CET | Update | https://www.mdpi.com/1424-2818/8/1/2/xml |
| article pdf uploaded. | 29 December 2015 12:26 CET | Version of Record | https://www.mdpi.com/1424-2818/8/1/2/pdf-vor |
| article xml uploaded. | 29 December 2015 12:26 CET | Original file | N/A |
