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| article pdf uploaded. | 22 February 2019 14:07 CET | Updated version of record | https://www.mdpi.com/2304-8158/8/2/77/pdf |
| article xml uploaded. | 22 February 2019 14:07 CET | Update | https://www.mdpi.com/2304-8158/8/2/77/xml |
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| article supplementary file uploaded. | 19 February 2019 09:25 CET | - | https://www.mdpi.com/2304-8158/8/2/77#supplementary |
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| article xml uploaded. | 19 February 2019 09:25 CET | Update | - |
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