| article html file updated | 7 February 2020 21:07 CET | Update | https://www.mdpi.com/2218-1997/3/1/4 |
| article html file updated | 4 May 2019 16:04 CEST | Update | N/A |
| article html file updated | 30 March 2017 03:34 CEST | Update | N/A |
| article html file updated | 7 February 2017 10:35 CET | Update | N/A |
| article xml uploaded. | 7 February 2017 10:19 CET | Update | https://www.mdpi.com/2218-1997/3/1/4/xml |
| article pdf uploaded. | 7 February 2017 10:19 CET | Updated version of record | https://www.mdpi.com/2218-1997/3/1/4/pdf |
| article html file updated | 6 February 2017 04:36 CET | Update | N/A |
| article xml uploaded. | 6 February 2017 04:34 CET | Update | N/A |
| article pdf uploaded. | 6 February 2017 04:34 CET | Updated version of record | https://www.mdpi.com/2218-1997/3/1/4/pdf-vor |
| article pdf uploaded. | 11 January 2017 03:20 CET | Updated version of record | https://www.mdpi.com/2218-1997/3/1/4/pdf-vor |
| article pdf uploaded. | 11 January 2017 03:16 CET | Version of Record | https://www.mdpi.com/2218-1997/3/1/4/pdf-vor |
| article html file updated | 10 January 2017 14:54 CET | Update | N/A |
| article html file updated | 10 January 2017 14:54 CET | Original file | N/A |
| article xml uploaded. | 10 January 2017 14:53 CET | Original file | N/A |
