| article html file updated | 9 February 2020 08:29 CET | Update | https://www.mdpi.com/2076-0787/7/1/21 |
| article html file updated | 1 May 2019 14:35 CEST | Update | N/A |
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| article html file updated | 29 March 2019 03:34 CET | Update | N/A |
| article html file updated | 16 March 2018 10:05 CET | Update | N/A |
| article xml uploaded. | 16 March 2018 10:04 CET | Update | https://www.mdpi.com/2076-0787/7/1/21/xml |
| article pdf uploaded. | 16 March 2018 10:04 CET | Updated version of record | https://www.mdpi.com/2076-0787/7/1/21/pdf |
| article html file updated | 2 March 2018 16:52 CET | Original file | N/A |
| article pdf uploaded. | 2 March 2018 16:51 CET | Version of Record | https://www.mdpi.com/2076-0787/7/1/21/pdf-vor |
