| article html file updated | 8 February 2020 10:09 CET | Update | https://www.mdpi.com/2076-3921/6/3/53 |
| article html file updated | 25 September 2019 18:28 CEST | Update | - |
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| article html file updated | 30 September 2017 11:18 CEST | Update | - |
| article html file updated | 5 July 2017 15:13 CEST | Original file | - |
| article xml uploaded. | 5 July 2017 15:12 CEST | Original file | https://www.mdpi.com/2076-3921/6/3/53/xml |
| article pdf uploaded. | 5 July 2017 15:12 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/3/53/pdf |
