| article html file updated | 7 February 2020 22:53 CET | Update | https://www.mdpi.com/2312-7481/3/1/6 |
| article html file updated | 23 September 2019 05:08 CEST | Update | - |
| article html file updated | 4 May 2019 12:16 CEST | Update | - |
| article html file updated | 29 March 2017 08:49 CEST | Update | - |
| article html file updated | 10 February 2017 07:38 CET | Update | - |
| article xml uploaded. | 10 February 2017 07:37 CET | Update | https://www.mdpi.com/2312-7481/3/1/6/xml |
| article pdf uploaded. | 10 February 2017 07:37 CET | Updated version of record | https://www.mdpi.com/2312-7481/3/1/6/pdf |
| article html file updated | 8 February 2017 11:29 CET | Original file | - |
| article xml uploaded. | 8 February 2017 11:27 CET | Original file | - |
| article pdf uploaded. | 8 February 2017 11:27 CET | Version of Record | https://www.mdpi.com/2312-7481/3/1/6/pdf-vor |
