| article html file updated | 30 August 2025 21:25 CEST | Update | https://www.mdpi.com/2218-1997/5/6/156 |
| article html file updated | 20 July 2022 15:15 CEST | Update | N/A |
| article html file updated | 12 February 2020 21:04 CET | Update | N/A |
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| article html file updated | 24 June 2019 05:53 CEST | Original file | N/A |
| article pdf uploaded. | 24 June 2019 05:52 CEST | Updated version of record | https://www.mdpi.com/2218-1997/5/6/156/pdf |
| article xml uploaded. | 24 June 2019 05:52 CEST | Update | https://www.mdpi.com/2218-1997/5/6/156/xml |
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| article pdf uploaded. | 20 June 2019 15:36 CEST | Version of Record | https://www.mdpi.com/2218-1997/5/6/156/pdf-vor |
| article xml file uploaded | 20 June 2019 15:36 CEST | Original file | N/A |