| article html file updated | 7 February 2020 05:37 CET | Update | https://www.mdpi.com/2220-9964/5/3/31 |
| article html file updated | 5 May 2019 22:04 CEST | Update | - |
| article html file updated | 26 March 2019 22:55 CET | Update | - |
| article html file updated | 28 March 2016 11:23 CEST | Original file | - |
| article pdf uploaded. | 11 March 2016 09:13 CET | Version of Record | https://www.mdpi.com/2220-9964/5/3/31/pdf |
| article xml uploaded. | 11 March 2016 09:13 CET | Original file | https://www.mdpi.com/2220-9964/5/3/31/xml |
