| article html file updated | 7 February 2020 10:13 CET | Update | https://www.mdpi.com/2073-4360/8/6/231 |
| article html file updated | 21 September 2019 19:05 CEST | Update | - |
| article html file updated | 5 May 2019 12:51 CEST | Update | - |
| article html file updated | 27 March 2019 07:35 CET | Update | - |
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| article html file updated | 29 June 2016 11:41 CEST | Update | - |
| article html file updated | 15 June 2016 22:40 CEST | Original file | - |
| article xml uploaded. | 15 June 2016 15:06 CEST | Original file | https://www.mdpi.com/2073-4360/8/6/231/xml |
| article pdf uploaded. | 15 June 2016 15:06 CEST | Version of Record | https://www.mdpi.com/2073-4360/8/6/231/pdf |
