| article html file updated | 23 January 2026 08:39 CET | Update | https://www.mdpi.com/2218-2004/4/1/1 |
| article xml uploaded. | 23 January 2026 08:37 CET | Update | https://www.mdpi.com/2218-2004/4/1/1/xml |
| article xml uploaded. | 23 January 2026 07:37 CET | Update | N/A |
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| article html file updated | 29 March 2016 07:15 CEST | Original file | N/A |
| article pdf uploaded. | 29 December 2015 13:52 CET | Updated version of record | https://www.mdpi.com/2218-2004/4/1/1/pdf |
| article xml uploaded. | 25 December 2015 11:04 CET | Original file | N/A |
| article pdf uploaded. | 25 December 2015 11:03 CET | Version of Record | https://www.mdpi.com/2218-2004/4/1/1/pdf-vor |
