| article html file updated | 30 August 2025 09:20 CEST | Update | https://www.mdpi.com/2218-1997/4/12/135 |
| article html file updated | 17 July 2022 11:51 CEST | Update | - |
| article html file updated | 10 February 2020 23:57 CET | Update | - |
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| article html file updated | 25 December 2018 04:17 CET | Update | - |
| article html file updated | 10 December 2018 04:56 CET | Original file | - |
| article pdf uploaded. | 10 December 2018 04:54 CET | Updated version of record | https://www.mdpi.com/2218-1997/4/12/135/pdf |
| article xml uploaded. | 10 December 2018 04:54 CET | Update | https://www.mdpi.com/2218-1997/4/12/135/xml |
| article xml file uploaded | 10 December 2018 04:54 CET | Update | - |
| article pdf uploaded. | 28 November 2018 17:19 CET | Updated version of record | https://www.mdpi.com/2218-1997/4/12/135/pdf-vor |
| article pdf uploaded. | 28 November 2018 17:12 CET | Version of Record | https://www.mdpi.com/2218-1997/4/12/135/pdf-vor |
| article xml file uploaded | 28 November 2018 17:12 CET | Original file | - |
