| article html file updated | 8 February 2020 06:16 CET | Update | https://www.mdpi.com/2305-6320/4/2/31 |
| article html file updated | 24 September 2019 22:02 CEST | Update | - |
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| article html file updated | 26 May 2017 09:53 CEST | Update | - |
| article xml uploaded. | 26 May 2017 09:52 CEST | Update | https://www.mdpi.com/2305-6320/4/2/31/xml |
| article pdf uploaded. | 26 May 2017 09:52 CEST | Updated version of record | https://www.mdpi.com/2305-6320/4/2/31/pdf |
| article html file updated | 22 May 2017 04:55 CEST | Update | - |
| article html file updated | 19 May 2017 12:07 CEST | Original file | - |
| article pdf uploaded. | 19 May 2017 12:05 CEST | Version of Record | https://www.mdpi.com/2305-6320/4/2/31/pdf-vor |
