| article html file updated | 6 February 2020 15:18 CET | Update | https://www.mdpi.com/2227-7390/3/1/2 |
| article html file updated | 20 September 2019 17:08 CEST | Update | N/A |
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| article xml file uploaded | 20 July 2015 12:39 CEST | Original file | https://www.mdpi.com/2227-7390/3/1/2/xml |
| article pdf uploaded. | 19 January 2015 14:51 CET | Version of Record | https://www.mdpi.com/2227-7390/3/1/2/pdf |
