| article html file updated | 31 August 2025 09:55 CEST | Update | https://www.mdpi.com/2218-1997/6/2/22 |
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| article supplementary file uploaded. | 23 February 2020 12:06 CET | - | https://www.mdpi.com/2218-1997/6/2/22#supplementary |
| article pdf uploaded. | 23 February 2020 12:06 CET | Updated version of record | https://www.mdpi.com/2218-1997/6/2/22/pdf |
| article xml uploaded. | 23 February 2020 12:06 CET | Update | https://www.mdpi.com/2218-1997/6/2/22/xml |
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| article xml file uploaded | 24 January 2020 14:05 CET | Original file | - |