| article html file updated | 13 August 2026 15:14 CEST | Update | https://www.mdpi.com/2076-0787/4/1/181 |
| article html file updated | 6 February 2020 16:21 CET | Update | N/A |
| article html file updated | 20 September 2019 18:32 CEST | Update | N/A |
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| article html file updated | 25 March 2019 22:31 CET | Original file | N/A |
| article pdf uploaded. | 5 March 2015 13:15 CET | Version of Record | https://www.mdpi.com/2076-0787/4/1/181/pdf |
