id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-998	Ficker, T.	Dimension of Fracture Surfaces	2007	4	.pdf	application/pdf	2692	137	67	The generalized Balshin function then reads � � �� � � �� � � �� � � � � 0 0 0 01 1 0 1 1 * ( ) , , P P s P b s b P k k cr cr 0 0 0 0� � �� � �* * , Pk cr , (5) where P is total porosity and � is compressive strength of the sample with a virtually incompressible fluid filling at least a part of its pore space. If the fracture surface were a perfect Euclidean plane (S � 2), expression (7) would lead to the well-known equation D Di i * � 1.	cache/ap-998.pdf	txt/ap-998.txt