| article html file updated | 7 February 2020 21:14 CET | Update | https://www.mdpi.com/2072-6643/9/1/59 |
| article html file updated | 22 September 2019 20:10 CEST | Update | - |
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| article html file updated | 7 February 2017 12:29 CET | Update | - |
| article html file updated | 11 January 2017 16:13 CET | Original file | - |
| article xml uploaded. | 11 January 2017 16:11 CET | Original file | https://www.mdpi.com/2072-6643/9/1/59/xml |
| article pdf uploaded. | 11 January 2017 16:11 CET | Version of Record | https://www.mdpi.com/2072-6643/9/1/59/pdf |
