| article html file updated | 8 February 2020 22:58 CET | Update | https://www.mdpi.com/2225-1154/5/4/91 |
| article html file updated | 28 September 2019 22:48 CEST | Update | - |
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| article html file updated | 5 December 2017 04:25 CET | Update | - |
| article xml uploaded. | 5 December 2017 04:24 CET | Update | https://www.mdpi.com/2225-1154/5/4/91/xml |
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| article pdf uploaded. | 5 December 2017 04:24 CET | Updated version of record | https://www.mdpi.com/2225-1154/5/4/91/pdf |
| article html file updated | 3 December 2017 23:09 CET | Original file | - |
| article xml uploaded. | 3 December 2017 08:11 CET | Update | - |
| article xml uploaded. | 3 December 2017 08:11 CET | Original file | - |
| article pdf uploaded. | 3 December 2017 08:11 CET | Version of Record | https://www.mdpi.com/2225-1154/5/4/91/pdf-vor |
