| article html file updated | 8 February 2020 00:40 CET | Update | https://www.mdpi.com/2073-4344/7/3/77 |
| article html file updated | 23 September 2019 15:14 CEST | Update | - |
| article html file updated | 4 May 2019 08:29 CEST | Update | - |
| article html file updated | 28 March 2017 03:06 CEST | Update | - |
| article html file updated | 3 March 2017 10:24 CET | Original file | - |
| article xml uploaded. | 3 March 2017 10:22 CET | Original file | https://www.mdpi.com/2073-4344/7/3/77/xml |
| article pdf uploaded. | 3 March 2017 10:22 CET | Version of Record | https://www.mdpi.com/2073-4344/7/3/77/pdf |
