| article html file updated | 8 February 2020 02:15 CET | Update | https://www.mdpi.com/2071-1050/9/4/497 |
| article html file updated | 24 September 2019 00:16 CEST | Update | - |
| article html file updated | 4 May 2019 05:02 CEST | Update | - |
| article html file updated | 28 April 2017 10:44 CEST | Update | - |
| article html file updated | 27 March 2017 05:49 CEST | Update | - |
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| article html file updated | 26 March 2017 22:32 CEST | Update | - |
| article html file updated | 25 March 2017 22:35 CET | Update | - |
| article html file updated | 25 March 2017 10:59 CET | Original file | - |
| article xml uploaded. | 25 March 2017 10:58 CET | Update | https://www.mdpi.com/2071-1050/9/4/497/xml |
| article pdf uploaded. | 25 March 2017 10:58 CET | Version of Record | https://www.mdpi.com/2071-1050/9/4/497/pdf |
