| article html file updated | 5 February 2020 13:33 CET | Update | https://www.mdpi.com/1424-8247/3/2/393 |
| article html file updated | 18 September 2019 20:56 CEST | Update | N/A |
| article html file updated | 9 May 2019 08:23 CEST | Update | N/A |
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| article html file updated | 5 June 2014 09:10 CEST | Update | N/A |
| article xml file uploaded | 5 June 2014 09:10 CEST | Update | https://www.mdpi.com/1424-8247/3/2/393/xml |
| article html file updated | 23 May 2014 14:11 CEST | Original file | N/A |
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