| article html file updated | 30 August 2025 12:02 CEST | Update | https://www.mdpi.com/1996-1073/12/4/615 |
| article html file updated | 19 July 2022 05:43 CEST | Update | N/A |
| article html file updated | 11 February 2020 16:15 CET | Update | N/A |
| article html file updated | 15 October 2019 01:12 CEST | Update | N/A |
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| article html file updated | 21 February 2019 17:06 CET | Update | N/A |
| article xml uploaded. | 21 February 2019 17:05 CET | Update | https://www.mdpi.com/1996-1073/12/4/615/xml |
| article xml uploaded. | 21 February 2019 17:05 CET | Update | N/A |
| article xml uploaded. | 21 February 2019 17:05 CET | Update | N/A |
| article pdf uploaded. | 21 February 2019 17:04 CET | Updated version of record | https://www.mdpi.com/1996-1073/12/4/615/pdf |
| article html file updated | 15 February 2019 10:39 CET | Original file | N/A |
| article pdf uploaded. | 15 February 2019 10:37 CET | Version of Record | https://www.mdpi.com/1996-1073/12/4/615/pdf-vor |
| article xml uploaded. | 15 February 2019 10:37 CET | Update | N/A |
| article xml file uploaded | 15 February 2019 10:37 CET | Original file | N/A |
