| article html file updated | 9 February 2020 01:56 CET | Update | https://www.mdpi.com/2304-6775/6/1/2 |
| article html file updated | 29 September 2019 15:56 CEST | Update | - |
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| article xml uploaded. | 4 January 2018 10:56 CET | Update | https://www.mdpi.com/2304-6775/6/1/2/xml |
| article pdf uploaded. | 4 January 2018 10:56 CET | Updated version of record | https://www.mdpi.com/2304-6775/6/1/2/pdf |
| article html file updated | 3 January 2018 17:29 CET | Original file | - |
| article pdf uploaded. | 3 January 2018 17:28 CET | Version of Record | https://www.mdpi.com/2304-6775/6/1/2/pdf-vor |
