| article html file updated | 5 February 2020 13:24 CET | Update | https://www.mdpi.com/1424-8247/3/1/251 |
| article html file updated | 9 May 2019 08:42 CEST | Update | - |
| article html file updated | 19 March 2019 21:47 CET | Update | - |
| article html file updated | 16 June 2015 07:58 CEST | Update | - |
| article html file updated | 28 April 2014 11:00 CEST | Update | - |
| article xml file uploaded | 28 April 2014 11:00 CEST | Original file | https://www.mdpi.com/1424-8247/3/1/251/xml |
| article html file updated | 6 February 2013 16:23 CET | Update | - |
| article html file updated | 5 February 2013 20:32 CET | Update | - |
| article html file updated | 28 January 2013 18:09 CET | Update | - |
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| article html file updated | 21 January 2013 19:35 CET | Update | - |
| article html file updated | 18 January 2013 01:36 CET | Original file | - |
