| article html file updated | 8 February 2020 10:31 CET | Update | https://www.mdpi.com/2220-9964/6/7/208 |
| article html file updated | 25 September 2019 20:13 CEST | Update | - |
| article html file updated | 3 May 2019 13:17 CEST | Update | - |
| article html file updated | 31 July 2017 07:39 CEST | Update | - |
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| article html file updated | 13 July 2017 14:00 CEST | Update | - |
| article xml uploaded. | 13 July 2017 13:58 CEST | Update | https://www.mdpi.com/2220-9964/6/7/208/xml |
| article pdf uploaded. | 13 July 2017 13:58 CEST | Updated version of record | https://www.mdpi.com/2220-9964/6/7/208/pdf |
| article html file updated | 8 July 2017 11:58 CEST | Original file | - |
| article pdf uploaded. | 8 July 2017 11:57 CEST | Version of Record | https://www.mdpi.com/2220-9964/6/7/208/pdf-vor |
