| article html file updated | 31 August 2025 09:22 CEST | Update | https://www.mdpi.com/2076-0817/9/1/68 |
| article html file updated | 20 July 2022 17:54 CEST | Update | - |
| article html file updated | 15 February 2020 04:14 CET | Update | - |
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| article html file updated | 23 January 2020 05:24 CET | Update | - |
| article pdf uploaded. | 23 January 2020 05:23 CET | Updated version of record | https://www.mdpi.com/2076-0817/9/1/68/pdf |
| article xml file uploaded | 23 January 2020 05:23 CET | Update | https://www.mdpi.com/2076-0817/9/1/68/xml |
| article html file updated | 23 January 2020 05:07 CET | Update | - |
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| article pdf uploaded. | 23 January 2020 05:06 CET | Updated version of record | https://www.mdpi.com/2076-0817/9/1/68/pdf-vor |
| article html file updated | 23 January 2020 04:58 CET | Update | - |
| article pdf uploaded. | 23 January 2020 04:56 CET | Updated version of record | https://www.mdpi.com/2076-0817/9/1/68/pdf-vor |
| article xml uploaded. | 23 January 2020 04:56 CET | Update | - |
| article xml file uploaded | 23 January 2020 04:56 CET | Update | - |
| article html file updated | 19 January 2020 04:52 CET | Original file | - |
| article xml file uploaded | 19 January 2020 04:50 CET | Update | - |
| article pdf uploaded. | 19 January 2020 04:50 CET | Version of Record | https://www.mdpi.com/2076-0817/9/1/68/pdf-vor |
| article xml uploaded. | 19 January 2020 04:50 CET | Original file | - |
