| article html file updated | 12 August 2026 22:25 CEST | Update | https://www.mdpi.com/2073-4395/4/1/108 |
| article html file updated | 6 February 2020 07:16 CET | Update | N/A |
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| article pdf uploaded. | 18 February 2014 15:05 CET | Updated version of record | https://www.mdpi.com/2073-4395/4/1/108/pdf |
| article pdf uploaded. | 17 February 2014 08:59 CET | Version of Record | https://www.mdpi.com/2073-4395/4/1/108/pdf-vor |
