| article html file updated | 7 February 2020 22:51 CET | Update | https://www.mdpi.com/2218-273X/7/1/12 |
| article html file updated | 23 September 2019 04:58 CEST | Update | N/A |
| article html file updated | 4 May 2019 12:20 CEST | Update | N/A |
| article html file updated | 14 March 2018 17:54 CET | Update | N/A |
| article html file updated | 29 March 2017 06:02 CEST | Update | N/A |
| article html file updated | 8 February 2017 11:23 CET | Original file | N/A |
| article xml uploaded. | 8 February 2017 11:04 CET | Original file | https://www.mdpi.com/2218-273X/7/1/12/xml |
| article pdf uploaded. | 8 February 2017 11:04 CET | Version of Record | https://www.mdpi.com/2218-273X/7/1/12/pdf |
