| article html file updated | 8 February 2020 15:26 CET | Update | https://www.mdpi.com/2304-8158/6/9/77 |
| article html file updated | 26 September 2019 23:27 CEST | Update | - |
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| article html file updated | 30 September 2017 10:18 CEST | Update | - |
| article html file updated | 6 September 2017 12:19 CEST | Original file | - |
| article xml uploaded. | 6 September 2017 12:18 CEST | Original file | https://www.mdpi.com/2304-8158/6/9/77/xml |
| article pdf uploaded. | 6 September 2017 12:18 CEST | Version of Record | https://www.mdpi.com/2304-8158/6/9/77/pdf |
