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| article html file updated | 16 July 2022 08:17 CEST | Update | N/A |
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| article html file updated | 26 March 2018 15:52 CEST | Update | N/A |
| article pdf uploaded. | 23 January 2018 08:34 CET | Updated version of record | https://www.mdpi.com/2227-9059/6/1/6/pdf |
| article pdf uploaded. | 23 January 2018 04:59 CET | Updated version of record | https://www.mdpi.com/2227-9059/6/1/6/pdf-vor |
| article html file updated | 2 January 2018 20:16 CET | Original file | N/A |
| article xml uploaded. | 2 January 2018 10:43 CET | Original file | https://www.mdpi.com/2227-9059/6/1/6/xml |
| article pdf uploaded. | 2 January 2018 10:43 CET | Version of Record | https://www.mdpi.com/2227-9059/6/1/6/pdf-vor |
