| article html file updated | 29 August 2025 21:13 CEST | Update | https://www.mdpi.com/2218-1989/4/3/740 |
| article html file updated | 15 July 2022 23:20 CEST | Update | - |
| article html file updated | 6 February 2020 11:48 CET | Update | - |
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| article xml file uploaded | 11 October 2014 03:20 CEST | Update | https://www.mdpi.com/2218-1989/4/3/740/xml |
| article html file updated | 29 September 2014 08:55 CEST | Original file | - |
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| article pdf uploaded. | 28 August 2014 14:27 CEST | Updated version of record | https://www.mdpi.com/2218-1989/4/3/740/pdf |
| article pdf uploaded. | 27 August 2014 09:29 CEST | Version of Record | https://www.mdpi.com/2218-1989/4/3/740/pdf-vor |
