| article html file updated | 9 February 2020 19:15 CET | Update | https://www.mdpi.com/2304-8158/7/6/81 |
| article html file updated | 4 October 2019 00:26 CEST | Update | - |
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| article xml uploaded. | 29 May 2018 06:29 CEST | Update | https://www.mdpi.com/2304-8158/7/6/81/xml |
| article pdf uploaded. | 29 May 2018 06:29 CEST | Updated version of record | https://www.mdpi.com/2304-8158/7/6/81/pdf |
| article html file updated | 28 May 2018 08:06 CEST | Original file | - |
| article xml file uploaded | 28 May 2018 08:05 CEST | Original file | - |
