| article html file updated | 7 February 2020 22:46 CET | Update | https://www.mdpi.com/2073-4360/9/2/53 |
| article html file updated | 23 September 2019 04:30 CEST | Update | N/A |
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| article html file updated | 20 March 2019 06:35 CET | Update | N/A |
| article html file updated | 1 March 2017 11:13 CET | Update | N/A |
| article html file updated | 7 February 2017 10:33 CET | Original file | N/A |
| article xml uploaded. | 7 February 2017 09:56 CET | Original file | https://www.mdpi.com/2073-4360/9/2/53/xml |
| article pdf uploaded. | 7 February 2017 09:56 CET | Version of Record | https://www.mdpi.com/2073-4360/9/2/53/pdf |
