| article html file updated | 8 February 2020 02:29 CET | Update | https://www.mdpi.com/2304-8158/6/4/25 |
| article html file updated | 24 September 2019 01:35 CEST | Update | - |
| article html file updated | 4 May 2019 04:30 CEST | Update | - |
| article html file updated | 28 April 2017 07:57 CEST | Update | - |
| article html file updated | 30 March 2017 04:59 CEST | Update | - |
| article xml uploaded. | 30 March 2017 04:57 CEST | Update | https://www.mdpi.com/2304-8158/6/4/25/xml |
| article pdf uploaded. | 30 March 2017 04:57 CEST | Updated version of record | https://www.mdpi.com/2304-8158/6/4/25/pdf |
| article html file updated | 29 March 2017 16:22 CEST | Original file | - |
| article pdf uploaded. | 29 March 2017 16:21 CEST | Version of Record | https://www.mdpi.com/2304-8158/6/4/25/pdf-vor |
