| article html file updated | 7 February 2020 20:24 CET | Update | https://www.mdpi.com/1424-8220/17/1/50 |
| article html file updated | 22 September 2019 15:48 CEST | Update | - |
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| article html file updated | 8 February 2017 09:02 CET | Update | - |
| article html file updated | 29 December 2016 10:02 CET | Update | - |
| article xml uploaded. | 29 December 2016 10:00 CET | Update | https://www.mdpi.com/1424-8220/17/1/50/xml |
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| article pdf uploaded. | 29 December 2016 10:00 CET | Updated version of record | https://www.mdpi.com/1424-8220/17/1/50/pdf |
| article html file updated | 28 December 2016 04:19 CET | Original file | - |
| article xml uploaded. | 28 December 2016 04:18 CET | Update | - |
| article xml uploaded. | 28 December 2016 04:18 CET | Original file | - |
| article pdf uploaded. | 28 December 2016 04:18 CET | Version of Record | https://www.mdpi.com/1424-8220/17/1/50/pdf-vor |
