| article html file updated | 7 February 2020 18:40 CET | Update | https://www.mdpi.com/2075-1729/6/4/41 |
| article html file updated | 22 September 2019 07:10 CEST | Update | N/A |
| article html file updated | 4 May 2019 21:14 CEST | Update | N/A |
| article html file updated | 29 December 2016 06:06 CET | Update | N/A |
| article html file updated | 26 November 2016 07:57 CET | Original file | N/A |
| article xml uploaded. | 26 November 2016 07:56 CET | Update | https://www.mdpi.com/2075-1729/6/4/41/xml |
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| article xml uploaded. | 26 November 2016 07:56 CET | Update | N/A |
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| article xml uploaded. | 26 November 2016 07:56 CET | Update | N/A |
| article xml uploaded. | 26 November 2016 07:56 CET | Original file | N/A |
| article pdf uploaded. | 26 November 2016 07:56 CET | Version of Record | https://www.mdpi.com/2075-1729/6/4/41/pdf |
