| article html file updated | 11 February 2020 05:26 CET | Update | https://www.mdpi.com/2218-1997/5/1/6 |
| article html file updated | 27 April 2019 14:16 CEST | Update | N/A |
| article html file updated | 13 April 2019 10:13 CEST | Update | N/A |
| article html file updated | 2 April 2019 19:06 CEST | Update | N/A |
| article html file updated | 29 January 2019 03:27 CET | Update | N/A |
| article pdf uploaded. | 28 January 2019 12:40 CET | Updated version of record | https://www.mdpi.com/2218-1997/5/1/6/pdf |
| article html file updated | 28 December 2018 13:52 CET | Update | N/A |
| article xml uploaded. | 28 December 2018 13:50 CET | Update | https://www.mdpi.com/2218-1997/5/1/6/xml |
| article xml uploaded. | 28 December 2018 13:50 CET | Update | N/A |
| article xml uploaded. | 28 December 2018 13:50 CET | Update | N/A |
| article pdf uploaded. | 28 December 2018 13:50 CET | Updated version of record | https://www.mdpi.com/2218-1997/5/1/6/pdf-vor |
| article html file updated | 27 December 2018 01:43 CET | Original file | N/A |
| article pdf uploaded. | 26 December 2018 15:10 CET | Version of Record | https://www.mdpi.com/2218-1997/5/1/6/pdf-vor |
| article xml uploaded. | 26 December 2018 15:10 CET | Update | N/A |
| article xml file uploaded | 26 December 2018 15:10 CET | Original file | N/A |
