| article html file updated | 30 August 2025 03:21 CEST | Update | https://www.mdpi.com/1996-1073/11/4/857 |
| article html file updated | 16 July 2022 10:31 CEST | Update | N/A |
| article html file updated | 9 February 2020 12:45 CET | Update | N/A |
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| article html file updated | 12 April 2018 10:48 CEST | Update | N/A |
| article xml uploaded. | 12 April 2018 10:46 CEST | Update | https://www.mdpi.com/1996-1073/11/4/857/xml |
| article pdf uploaded. | 12 April 2018 10:46 CEST | Updated version of record | https://www.mdpi.com/1996-1073/11/4/857/pdf |
| article html file updated | 6 April 2018 06:31 CEST | Original file | N/A |
| article pdf uploaded. | 6 April 2018 06:29 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/4/857/pdf-vor |
