| article html file updated | 24 December 2025 13:35 CET | Update | https://www.mdpi.com/1999-4915/5/2/654 |
| article html file updated | 28 September 2025 19:16 CEST | Update | N/A |
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| article html file updated | 20 March 2019 18:35 CET | Original file | N/A |
| article pdf uploaded. | 12 February 2013 09:05 CET | Updated version of record | https://www.mdpi.com/1999-4915/5/2/654/pdf |
| article pdf uploaded. | 11 February 2013 11:29 CET | Version of Record | N/A |
