| article html file updated | 9 February 2020 19:41 CET | Update | https://www.mdpi.com/2227-9067/5/6/66 |
| article html file updated | 4 October 2019 03:01 CEST | Update | N/A |
| article html file updated | 30 April 2019 15:11 CEST | Update | N/A |
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| article html file updated | 11 July 2018 14:23 CEST | Update | N/A |
| article xml uploaded. | 11 July 2018 14:22 CEST | Update | https://www.mdpi.com/2227-9067/5/6/66/xml |
| article html file updated | 26 June 2018 04:51 CEST | Update | N/A |
| article html file updated | 31 May 2018 10:44 CEST | Original file | N/A |
| article pdf uploaded. | 31 May 2018 09:48 CEST | Version of Record | https://www.mdpi.com/2227-9067/5/6/66/pdf |
| article xml file uploaded | 31 May 2018 09:48 CEST | Original file | N/A |
