| article html file updated | 8 February 2020 08:27 CET | Update | https://www.mdpi.com/2077-0375/7/2/32 |
| article html file updated | 25 September 2019 09:16 CEST | Update | N/A |
| article html file updated | 3 May 2019 17:10 CEST | Update | N/A |
| article html file updated | 29 June 2017 11:39 CEST | Update | N/A |
| article html file updated | 16 June 2017 10:30 CEST | Original file | N/A |
| article xml uploaded. | 16 June 2017 10:29 CEST | Original file | https://www.mdpi.com/2077-0375/7/2/32/xml |
| article pdf uploaded. | 16 June 2017 10:29 CEST | Version of Record | https://www.mdpi.com/2077-0375/7/2/32/pdf |
