| article html file updated | 9 February 2020 01:41 CET | Update | https://www.mdpi.com/1996-1073/11/1/91 |
| article html file updated | 29 September 2019 14:34 CEST | Update | - |
| article html file updated | 2 May 2019 05:04 CEST | Update | - |
| article html file updated | 18 April 2019 03:07 CEST | Update | - |
| article html file updated | 28 March 2019 12:22 CET | Update | - |
| article html file updated | 1 February 2018 11:18 CET | Update | - |
| article html file updated | 2 January 2018 20:49 CET | Original file | - |
| article xml uploaded. | 2 January 2018 11:54 CET | Original file | https://www.mdpi.com/1996-1073/11/1/91/xml |
| article pdf uploaded. | 2 January 2018 11:54 CET | Updated version of record | https://www.mdpi.com/1996-1073/11/1/91/pdf |
| article pdf uploaded. | 1 January 2018 09:13 CET | Updated version of record | https://www.mdpi.com/1996-1073/11/1/91/pdf-vor |
| article pdf uploaded. | 1 January 2018 09:11 CET | Version of Record | https://www.mdpi.com/1996-1073/11/1/91/pdf-vor |
