| article html file updated | 8 February 2020 11:37 CET | Update | https://www.mdpi.com/2220-9964/6/7/224 |
| article html file updated | 26 September 2019 02:03 CEST | Update | - |
| article html file updated | 3 May 2019 11:10 CEST | Update | - |
| article html file updated | 27 March 2019 16:57 CET | Update | - |
| article html file updated | 31 July 2017 07:33 CEST | Update | - |
| article html file updated | 21 July 2017 14:12 CEST | Update | - |
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| article html file updated | 21 July 2017 14:10 CEST | Original file | - |
| article xml uploaded. | 21 July 2017 14:09 CEST | Update | https://www.mdpi.com/2220-9964/6/7/224/xml |
| article pdf uploaded. | 21 July 2017 14:09 CEST | Version of Record | https://www.mdpi.com/2220-9964/6/7/224/pdf |
