| article html file updated | 7 February 2020 07:05 CET | Update | https://www.mdpi.com/2076-3417/6/4/103 |
| article html file updated | 5 May 2019 19:01 CEST | Update | - |
| article html file updated | 27 March 2019 01:31 CET | Update | - |
| article html file updated | 27 April 2016 11:23 CEST | Update | - |
| article html file updated | 11 April 2016 07:46 CEST | Original file | - |
| article xml uploaded. | 11 April 2016 07:45 CEST | Original file | https://www.mdpi.com/2076-3417/6/4/103/xml |
| article pdf uploaded. | 11 April 2016 07:45 CEST | Version of Record | https://www.mdpi.com/2076-3417/6/4/103/pdf |
