| article html file updated | 30 August 2025 10:03 CEST | Update | https://www.mdpi.com/2076-3271/6/4/117 |
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| article html file updated | 26 December 2018 22:28 CET | Update | - |
| article html file updated | 19 December 2018 11:55 CET | Original file | - |
| article pdf uploaded. | 19 December 2018 11:53 CET | Updated version of record | https://www.mdpi.com/2076-3271/6/4/117/pdf |
| article xml uploaded. | 19 December 2018 11:53 CET | Update | https://www.mdpi.com/2076-3271/6/4/117/xml |
| article xml file uploaded | 19 December 2018 11:53 CET | Update | - |
| article pdf uploaded. | 17 December 2018 16:16 CET | Updated version of record | https://www.mdpi.com/2076-3271/6/4/117/pdf-vor |
| article pdf uploaded. | 17 December 2018 16:09 CET | Version of Record | https://www.mdpi.com/2076-3271/6/4/117/pdf-vor |
| article xml file uploaded | 17 December 2018 16:09 CET | Original file | - |
