| article html file updated | 29 August 2025 21:00 CEST | Update | https://www.mdpi.com/2218-1989/4/2/142 |
| article html file updated | 15 July 2022 22:57 CEST | Update | - |
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| article html file updated | 18 July 2014 03:58 CEST | Original file | - |
| article xml file uploaded | 18 July 2014 03:58 CEST | Original file | https://www.mdpi.com/2218-1989/4/2/142/xml |
| article pdf uploaded. | 3 April 2014 09:42 CEST | Updated version of record | https://www.mdpi.com/2218-1989/4/2/142/pdf |
| article pdf uploaded. | 1 April 2014 16:03 CEST | Updated version of record | https://www.mdpi.com/2218-1989/4/2/142/pdf-vor |
| article pdf uploaded. | 31 March 2014 11:21 CEST | Version of Record | https://www.mdpi.com/2218-1989/4/2/142/pdf-vor |
