| article html file updated | 8 February 2020 00:18 CET | Update | https://new.mdpi.com/2227-9717/5/1/9 |
| article html file updated | 23 September 2019 13:09 CEST | Update | - |
| article html file updated | 4 May 2019 09:20 CEST | Update | - |
| article html file updated | 30 March 2017 08:55 CEST | Update | - |
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| article xml uploaded. | 1 March 2017 03:53 CET | Update | https://new.mdpi.com/2227-9717/5/1/9/xml |
| article pdf uploaded. | 1 March 2017 03:53 CET | Updated version of record | https://new.mdpi.com/2227-9717/5/1/9/pdf |
| article html file updated | 28 February 2017 07:22 CET | Original file | - |
| article xml uploaded. | 28 February 2017 07:21 CET | Update | - |
| article xml uploaded. | 28 February 2017 07:21 CET | Original file | - |
| article pdf uploaded. | 28 February 2017 07:21 CET | Updated version of record | https://new.mdpi.com/2227-9717/5/1/9/pdf-vor |
| article pdf uploaded. | 25 February 2017 13:51 CET | Version of Record | https://new.mdpi.com/2227-9717/5/1/9/pdf-vor |
