| article html file updated | 24 December 2025 17:03 CET | Update | https://www.mdpi.com/2076-3921/9/1/68 |
| article html file updated | 31 August 2025 08:50 CEST | Update | N/A |
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| article html file updated | 15 February 2020 02:20 CET | Update | N/A |
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| article html file updated | 13 January 2020 09:42 CET | Update | N/A |
| article pdf uploaded. | 13 January 2020 09:41 CET | Updated version of record | https://www.mdpi.com/2076-3921/9/1/68/pdf |
| article xml uploaded. | 13 January 2020 09:41 CET | Update | https://www.mdpi.com/2076-3921/9/1/68/xml |
| article xml file uploaded | 13 January 2020 09:41 CET | Update | N/A |
| article html file updated | 12 January 2020 12:01 CET | Original file | N/A |
| article pdf uploaded. | 12 January 2020 12:00 CET | Version of Record | https://www.mdpi.com/2076-3921/9/1/68/pdf-vor |
| article xml uploaded. | 12 January 2020 12:00 CET | Update | N/A |
| article xml file uploaded | 12 January 2020 12:00 CET | Original file | N/A |
