| article html file updated | 7 February 2020 22:54 CET | Update | https://www.mdpi.com/2075-4701/7/2/49 |
| article html file updated | 23 September 2019 05:12 CEST | Update | - |
| article html file updated | 4 May 2019 12:15 CEST | Update | - |
| article html file updated | 1 March 2017 03:51 CET | Update | - |
| article html file updated | 13 February 2017 04:11 CET | Original file | - |
| article xml uploaded. | 13 February 2017 04:10 CET | Original file | https://www.mdpi.com/2075-4701/7/2/49/xml |
| article pdf uploaded. | 13 February 2017 04:10 CET | Updated version of record | https://www.mdpi.com/2075-4701/7/2/49/pdf |
| article pdf uploaded. | 10 February 2017 03:46 CET | Updated version of record | https://www.mdpi.com/2075-4701/7/2/49/pdf-vor |
| article pdf uploaded. | 8 February 2017 11:42 CET | Version of Record | https://www.mdpi.com/2075-4701/7/2/49/pdf-vor |
