| article html file updated | 9 February 2020 07:01 CET | Update | https://www.mdpi.com/2227-7390/6/2/27 |
| article html file updated | 30 September 2019 21:36 CEST | Update | - |
| article html file updated | 1 May 2019 17:37 CEST | Update | - |
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| article html file updated | 29 March 2019 00:09 CET | Update | - |
| article html file updated | 14 March 2018 10:07 CET | Update | - |
| article html file updated | 23 February 2018 14:15 CET | Original file | - |
| article xml uploaded. | 23 February 2018 14:14 CET | Original file | https://www.mdpi.com/2227-7390/6/2/27/xml |
| article pdf uploaded. | 23 February 2018 14:14 CET | Updated version of record | https://www.mdpi.com/2227-7390/6/2/27/pdf |
| article pdf uploaded. | 19 February 2018 03:37 CET | Version of Record | https://www.mdpi.com/2227-7390/6/2/27/pdf-vor |
