| article html file updated | 9 February 2020 14:52 CET | Update | https://www.mdpi.com/2077-0375/8/2/21 |
| article html file updated | 2 October 2019 20:57 CEST | Update | N/A |
| article html file updated | 1 May 2019 01:27 CEST | Update | N/A |
| article html file updated | 17 April 2019 02:03 CEST | Update | N/A |
| article html file updated | 29 March 2019 18:06 CET | Update | N/A |
| article html file updated | 27 June 2018 06:31 CEST | Update | N/A |
| article html file updated | 23 April 2018 06:33 CEST | Original file | N/A |
| article pdf uploaded. | 23 April 2018 06:32 CEST | Version of Record | https://www.mdpi.com/2077-0375/8/2/21/pdf |
| article xml uploaded. | 23 April 2018 06:32 CEST | Update | https://www.mdpi.com/2077-0375/8/2/21/xml |
| article xml file uploaded | 23 April 2018 06:32 CEST | Original file | N/A |
