| article html file updated | 7 February 2020 19:56 CET | Update | https://www.mdpi.com/2073-4360/8/12/441 |
| article html file updated | 22 September 2019 13:13 CEST | Update | - |
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| article html file updated | 28 December 2016 08:07 CET | Update | - |
| article html file updated | 19 December 2016 12:28 CET | Original file | - |
| article xml uploaded. | 19 December 2016 12:27 CET | Original file | https://www.mdpi.com/2073-4360/8/12/441/xml |
| article pdf uploaded. | 19 December 2016 12:27 CET | Version of Record | https://www.mdpi.com/2073-4360/8/12/441/pdf |
