| article html file updated | 8 February 2020 13:40 CET | Update | https://www.mdpi.com/2304-8158/6/8/69 |
| article html file updated | 26 September 2019 13:48 CEST | Update | - |
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| article html file updated | 1 September 2017 08:26 CEST | Update | - |
| article html file updated | 16 August 2017 12:50 CEST | Original file | - |
| article xml uploaded. | 16 August 2017 12:49 CEST | Original file | https://www.mdpi.com/2304-8158/6/8/69/xml |
| article pdf uploaded. | 16 August 2017 12:49 CEST | Version of Record | https://www.mdpi.com/2304-8158/6/8/69/pdf |
