| article html file updated | 28 September 2025 19:19 CEST | Update | https://www.mdpi.com/2218-1989/3/2/440 |
| article html file updated | 6 February 2020 02:21 CET | Update | - |
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| article html file updated | 7 January 2014 12:29 CET | Original file | - |
| article xml file uploaded | 7 January 2014 12:29 CET | Original file | https://www.mdpi.com/2218-1989/3/2/440/xml |
| article supplementary file uploaded. | 24 June 2013 08:16 CEST | - | https://www.mdpi.com/2218-1989/3/2/440#supplementary |
| article pdf uploaded. | 24 June 2013 08:16 CEST | Updated version of record | https://www.mdpi.com/2218-1989/3/2/440/pdf |
| article supplementary file uploaded. | 29 May 2013 16:15 CEST | - | https://www.mdpi.com/2218-1989/3/2/440#supplementary |
| article pdf uploaded. | 29 May 2013 16:15 CEST | Updated version of record | https://www.mdpi.com/2218-1989/3/2/440/pdf-vor |
| article supplementary file uploaded. | 28 May 2013 10:35 CEST | - | https://www.mdpi.com/2218-1989/3/2/440#supplementary |
| article pdf uploaded. | 28 May 2013 10:34 CEST | Version of Record | https://www.mdpi.com/2218-1989/3/2/440/pdf-vor |
