| article html file updated | 8 February 2020 00:08 CET | Update | https://www.mdpi.com/2220-9964/6/3/58 |
| article html file updated | 23 September 2019 12:13 CEST | Update | - |
| article html file updated | 4 May 2019 09:42 CEST | Update | - |
| article html file updated | 28 March 2017 11:00 CEST | Update | - |
| article html file updated | 24 February 2017 03:06 CET | Original file | - |
| article xml uploaded. | 24 February 2017 03:04 CET | Update | https://www.mdpi.com/2220-9964/6/3/58/xml |
| article xml uploaded. | 24 February 2017 03:04 CET | Original file | - |
| article pdf uploaded. | 24 February 2017 03:04 CET | Version of Record | https://www.mdpi.com/2220-9964/6/3/58/pdf |
