| article html file updated | 30 August 2025 00:24 CEST | Update | https://www.mdpi.com/2218-1997/3/1/12 |
| article html file updated | 16 July 2022 04:52 CEST | Update | N/A |
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| article xml uploaded. | 15 February 2017 09:31 CET | Original file | https://www.mdpi.com/2218-1997/3/1/12/xml |
| article pdf uploaded. | 15 February 2017 09:31 CET | Updated version of record | https://www.mdpi.com/2218-1997/3/1/12/pdf |
| article pdf uploaded. | 14 February 2017 15:21 CET | Version of Record | https://www.mdpi.com/2218-1997/3/1/12/pdf-vor |
