| article html file updated | 9 February 2020 02:38 CET | Update | https://www.mdpi.com/2076-3417/8/1/91 |
| article html file updated | 29 September 2019 19:40 CEST | Update | - |
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| article html file updated | 1 February 2018 12:42 CET | Update | - |
| article html file updated | 12 January 2018 09:47 CET | Original file | - |
| article xml uploaded. | 12 January 2018 09:46 CET | Original file | https://www.mdpi.com/2076-3417/8/1/91/xml |
| article pdf uploaded. | 12 January 2018 09:46 CET | Updated version of record | https://www.mdpi.com/2076-3417/8/1/91/pdf |
| article pdf uploaded. | 10 January 2018 17:38 CET | Version of Record | https://www.mdpi.com/2076-3417/8/1/91/pdf-vor |
