| article html file updated | 29 August 2025 20:52 CEST | Update | https://www.mdpi.com/1996-1073/6/12/6170 |
| article html file updated | 15 July 2022 22:43 CEST | Update | N/A |
| article html file updated | 6 February 2020 05:49 CET | Update | N/A |
| article html file updated | 7 May 2019 21:34 CEST | Update | N/A |
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| article html file updated | 13 April 2017 09:31 CEST | Original file | N/A |
| article pdf uploaded. | 5 December 2013 15:44 CET | Updated version of record | https://www.mdpi.com/1996-1073/6/12/6170/pdf |
| article pdf uploaded. | 27 November 2013 15:41 CET | Version of Record | https://www.mdpi.com/1996-1073/6/12/6170/pdf-vor |
