| article html file updated | 24 December 2025 13:44 CET | Update | https://www.mdpi.com/2227-9091/1/3/81 |
| article html file updated | 28 September 2025 19:24 CEST | Update | N/A |
| article html file updated | 29 August 2025 20:49 CEST | Update | N/A |
| article html file updated | 20 August 2025 21:53 CEST | Update | N/A |
| article html file updated | 6 February 2020 05:10 CET | Update | N/A |
| article html file updated | 7 May 2019 22:48 CEST | Update | N/A |
| article html file updated | 21 March 2019 06:42 CET | Original file | N/A |
| article pdf uploaded. | 25 October 2013 15:26 CEST | Updated version of record | https://www.mdpi.com/2227-9091/1/3/81/pdf |
| article pdf uploaded. | 25 October 2013 15:19 CEST | Version of Record | N/A |
