| article html file updated | 8 February 2020 23:11 CET | Update | https://www.mdpi.com/2312-7481/3/4/41 |
| article html file updated | 29 September 2019 00:05 CEST | Update | - |
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| article xml uploaded. | 12 December 2017 07:22 CET | Update | https://www.mdpi.com/2312-7481/3/4/41/xml |
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| article pdf uploaded. | 12 December 2017 07:22 CET | Updated version of record | https://www.mdpi.com/2312-7481/3/4/41/pdf |
| article html file updated | 5 December 2017 12:21 CET | Original file | - |
| article xml uploaded. | 5 December 2017 12:20 CET | Update | - |
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