| article html file updated | 9 February 2020 01:08 CET | Update | https://www.mdpi.com/2075-4701/8/1/6 |
| article html file updated | 29 September 2019 11:20 CEST | Update | - |
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| article html file updated | 9 February 2018 10:52 CET | Update | - |
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| article html file updated | 29 December 2017 09:15 CET | Update | - |
| article xml uploaded. | 29 December 2017 09:14 CET | Update | https://www.mdpi.com/2075-4701/8/1/6/xml |
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| article pdf uploaded. | 29 December 2017 09:14 CET | Updated version of record | https://www.mdpi.com/2075-4701/8/1/6/pdf |
| article html file updated | 25 December 2017 10:11 CET | Original file | - |
| article xml uploaded. | 25 December 2017 10:10 CET | Original file | - |
| article pdf uploaded. | 25 December 2017 10:10 CET | Version of Record | https://www.mdpi.com/2075-4701/8/1/6/pdf-vor |
