id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ap-618	Patzák, B.; Bittnar, Z.	OOFEM – An Object Oriented Framework for Finite Element Analysis	2004	7	.pdf	application/pdf	3757	205	45	A typical example is stiffness matrix computation, which can be done already at the abstract level, provided that methods for computing the geometrical matrix and material stiffness are declared in an interface specifica- tion – they are only declared as abstract (virtual), and imple- mentation is left to derived classes representing particular fi- nite elements. Derived classes typically represent a finite element node or an element side, possess- ing some DOFs.	cache/ap-618.pdf	txt/ap-618.txt