| article html file updated | 30 August 2025 07:11 CEST | Update | https://www.mdpi.com/2076-393X/6/4/68 |
| article html file updated | 17 July 2022 03:20 CEST | Update | N/A |
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| article html file updated | 26 December 2018 23:23 CET | Update | N/A |
| article html file updated | 22 September 2018 06:51 CEST | Original file | N/A |
| article pdf uploaded. | 22 September 2018 06:50 CEST | Version of Record | https://www.mdpi.com/2076-393X/6/4/68/pdf |
| article xml uploaded. | 22 September 2018 06:50 CEST | Update | https://www.mdpi.com/2076-393X/6/4/68/xml |
| article xml file uploaded | 22 September 2018 06:50 CEST | Original file | N/A |
