| article html file updated | 8 February 2020 01:06 CET | Update | https://www.mdpi.com/2220-9964/6/3/77 |
| article html file updated | 23 September 2019 17:46 CEST | Update | - |
| article html file updated | 4 May 2019 07:30 CEST | Update | - |
| article html file updated | 28 March 2017 11:09 CEST | Update | - |
| article html file updated | 9 March 2017 10:20 CET | Original file | - |
| article xml uploaded. | 9 March 2017 10:19 CET | Original file | https://www.mdpi.com/2220-9964/6/3/77/xml |
| article pdf uploaded. | 9 March 2017 10:19 CET | Version of Record | https://www.mdpi.com/2220-9964/6/3/77/pdf |
