| article html file updated | 9 February 2020 19:04 CET | Update | https://www.mdpi.com/2218-1997/4/6/67 |
| article html file updated | 3 October 2019 23:24 CEST | Update | - |
| article html file updated | 30 April 2019 16:36 CEST | Update | - |
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| article html file updated | 30 March 2019 04:42 CET | Update | - |
| article html file updated | 26 June 2018 05:15 CEST | Update | - |
| article html file updated | 25 May 2018 13:36 CEST | Original file | - |
| article pdf uploaded. | 25 May 2018 13:35 CEST | Version of Record | https://www.mdpi.com/2218-1997/4/6/67/pdf |
| article xml uploaded. | 25 May 2018 13:35 CEST | Update | https://www.mdpi.com/2218-1997/4/6/67/xml |
| article xml file uploaded | 25 May 2018 13:35 CEST | Original file | - |
