| article html file updated | 9 February 2020 06:30 CET | Update | https://www.mdpi.com/2073-4344/8/2/78 |
| article html file updated | 30 September 2019 18:33 CEST | Update | - |
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| article html file updated | 13 February 2018 08:24 CET | Original file | - |
| article xml uploaded. | 13 February 2018 08:23 CET | Update | https://www.mdpi.com/2073-4344/8/2/78/xml |
| article xml uploaded. | 13 February 2018 08:22 CET | Update | - |
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| article pdf uploaded. | 13 February 2018 08:22 CET | Version of Record | https://www.mdpi.com/2073-4344/8/2/78/pdf |