https://www.sciencedirect.com/science/article/pii/S1359178917302859?casa_token=xt0dH8qPFTEAAAAA:azzqDGzKvBjHrrXCTX19-UsAG8RCYkvwMvkb7qCnNeXZ4XSZcKbtkfhZRZSHJ4ZKrjk6Ueo5IWHk 2018 General Medium
https://www.sciencedirect.com/science/article/pii/S1359178917302859?casa_token=xt0dH8qPFTEAAAAA:azzqDGzKvBjHrrXCTX19-UsAG8RCYkvwMvkb7qCnNeXZ4XSZcKbtkfhZRZSHJ4ZKrjk6Ueo5IWHk 2018 General Medium