| article html file updated | 12 August 2026 20:33 CEST | Update | https://www.mdpi.com/2218-1989/3/4/881 |
| article html file updated | 6 February 2020 04:49 CET | Update | N/A |
| article html file updated | 7 May 2019 23:28 CEST | Update | N/A |
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| article html file updated | 18 March 2014 09:53 CET | Original file | N/A |
| article xml file uploaded | 18 March 2014 09:53 CET | Original file | https://www.mdpi.com/2218-1989/3/4/881/xml |
| article supplementary file uploaded. | 15 October 2013 18:16 CEST | - | https://www.mdpi.com/2218-1989/3/4/881#supplementary |
| article pdf uploaded. | 15 October 2013 18:16 CEST | Updated version of record | https://www.mdpi.com/2218-1989/3/4/881/pdf |
| article supplementary file uploaded. | 11 October 2013 17:03 CEST | - | https://www.mdpi.com/2218-1989/3/4/881#supplementary |
| article pdf uploaded. | 11 October 2013 17:02 CEST | Version of Record | https://www.mdpi.com/2218-1989/3/4/881/pdf-vor |
