| article html file updated | 9 February 2020 19:09 CET | Update | https://www.mdpi.com/2199-8531/4/2/17 |
| article html file updated | 3 October 2019 23:51 CEST | Update | N/A |
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| article xml uploaded. | 6 June 2018 10:19 CEST | Update | https://www.mdpi.com/2199-8531/4/2/17/xml |
| article pdf uploaded. | 6 June 2018 10:19 CEST | Updated version of record | https://www.mdpi.com/2199-8531/4/2/17/pdf |
| article pdf uploaded. | 28 May 2018 04:05 CEST | Updated version of record | N/A |
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