| article html file updated | 7 February 2020 19:06 CET | Update | https://www.mdpi.com/2075-4701/6/12/306 |
| article html file updated | 22 September 2019 08:50 CEST | Update | N/A |
| article html file updated | 4 May 2019 20:20 CEST | Update | N/A |
| article html file updated | 28 December 2016 11:20 CET | Update | N/A |
| article pdf uploaded. | 8 December 2016 09:46 CET | Updated version of record | https://www.mdpi.com/2075-4701/6/12/306/pdf |
| article html file updated | 5 December 2016 11:09 CET | Original file | N/A |
| article xml uploaded. | 5 December 2016 11:08 CET | Update | https://www.mdpi.com/2075-4701/6/12/306/xml |
| article xml uploaded. | 5 December 2016 11:08 CET | Original file | N/A |
| article pdf uploaded. | 5 December 2016 11:08 CET | Version of Record | https://www.mdpi.com/2075-4701/6/12/306/pdf-vor |
