| article html file updated | 9 February 2020 05:28 CET | Update | https://www.mdpi.com/2220-9964/7/2/47 |
| article html file updated | 30 September 2019 12:25 CEST | Update | - |
| article html file updated | 1 May 2019 21:05 CEST | Update | - |
| article html file updated | 17 April 2019 20:01 CEST | Update | - |
| article html file updated | 28 March 2019 20:48 CET | Update | - |
| article html file updated | 14 March 2018 14:48 CET | Update | - |
| article html file updated | 4 February 2018 05:04 CET | Original file | - |
| article xml uploaded. | 4 February 2018 05:02 CET | Original file | https://www.mdpi.com/2220-9964/7/2/47/xml |
| article pdf uploaded. | 4 February 2018 05:02 CET | Version of Record | https://www.mdpi.com/2220-9964/7/2/47/pdf |
