| article html file updated | 29 August 2025 20:35 CEST | Update | https://www.mdpi.com/2218-1989/3/1/155 |
| article html file updated | 15 July 2022 22:11 CEST | Update | N/A |
| article html file updated | 6 February 2020 00:55 CET | Update | N/A |
| article html file updated | 8 May 2019 07:31 CEST | Update | N/A |
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| article html file updated | 17 June 2015 07:23 CEST | Update | N/A |
| article html file updated | 7 January 2014 12:28 CET | Original file | N/A |
| article xml file uploaded | 7 January 2014 12:28 CET | Original file | https://www.mdpi.com/2218-1989/3/1/155/xml |
| article pdf uploaded. | 12 March 2013 16:03 CET | Updated version of record | https://www.mdpi.com/2218-1989/3/1/155/pdf |
| article pdf uploaded. | 11 March 2013 14:53 CET | Version of Record | https://www.mdpi.com/2218-1989/3/1/155/pdf-vor |
