| article html file updated | 9 February 2020 02:27 CET | Update | https://www.mdpi.com/2076-393X/6/1/4 |
| article html file updated | 2 May 2019 03:30 CEST | Update | - |
| article html file updated | 18 April 2019 01:38 CEST | Update | - |
| article html file updated | 28 March 2019 14:10 CET | Update | - |
| article html file updated | 27 March 2018 15:07 CEST | Update | - |
| article html file updated | 9 January 2018 16:17 CET | Original file | - |
| article xml uploaded. | 9 January 2018 16:16 CET | Original file | https://www.mdpi.com/2076-393X/6/1/4/xml |
| article pdf uploaded. | 9 January 2018 16:16 CET | Version of Record | https://www.mdpi.com/2076-393X/6/1/4/pdf |
