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| article html file updated | 16 July 2022 20:42 CEST | Update | N/A |
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| article html file updated | 25 May 2018 08:46 CEST | Original file | N/A |
| article pdf uploaded. | 25 May 2018 08:44 CEST | Updated version of record | https://www.mdpi.com/2073-4336/9/2/31/pdf |
| article xml uploaded. | 25 May 2018 08:44 CEST | Update | https://www.mdpi.com/2073-4336/9/2/31/xml |
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| article pdf uploaded. | 24 May 2018 15:51 CEST | Updated version of record | https://www.mdpi.com/2073-4336/9/2/31/pdf-vor |
| article pdf uploaded. | 24 May 2018 15:50 CEST | Version of Record | https://www.mdpi.com/2073-4336/9/2/31/pdf-vor |
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