The two main notions of this economic approach are the concepts of transaction costs and institutions, analyzed by Coase and North, respectively.
1	The	the	DET	DT	Definite=Def|PronType=Art	4	det	4:det	Discourse=elaboration-additional:8->4:1|Entity=(24-abstract-new-cf1-4-coref
2	two	two	NUM	CD	NumForm=Word|NumType=Card	4	nummod	4:nummod	_
3	main	main	ADJ	JJ	Degree=Pos	4	amod	4:amod	_
4	notions	notion	NOUN	NNS	Number=Plur	11	nsubj	11:nsubj	_
5	of	of	ADP	IN	_	8	case	8:case	_
6	this	this	DET	DT	Number=Sing|PronType=Dem	8	det	8:det	Entity=(14-abstract-giv:inact-cf4-3-coref
7	economic	economic	ADJ	JJ	Degree=Pos	8	amod	8:amod	_
8	approach	approach	NOUN	NN	Number=Sing	4	nmod	4:nmod:of	Entity=14)24)
9	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	cop	11:cop	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	11:det	Entity=(24-abstract-giv:act-cf1-2-coref
11	concepts	concept	NOUN	NNS	Number=Plur	0	root	0:root	_
12	of	of	ADP	IN	_	14	case	14:case	_
13	transaction	transaction	NOUN	NN	Number=Sing	14	compound	14:compound	Entity=(25-abstract-new-cf6-2-coref(26-abstract-new-cf7-1-sgl)
14	costs	cost	NOUN	NNS	Number=Plur	11	nmod	11:nmod:of	Entity=25)
15	and	and	CCONJ	CC	_	16	cc	16:cc	_
16	institutions	institution	NOUN	NNS	Number=Plur	14	conj	11:nmod:of|14:conj:and	Entity=(13-organization-giv:inact-cf5-1-coref)|SpaceAfter=No
17	,	,	PUNCT	,	_	18	punct	18:punct	_
18	analyzed	analyze	VERB	VBN	Tense=Past|VerbForm=Part	11	acl	11:acl	Discourse=elaboration-attribute:9->8:0
19	by	by	ADP	IN	_	20	case	20:case	_
20	Coase	Coase	PROPN	NNP	Number=Sing	18	obl:agent	18:obl:agent	Entity=(20-person-giv:act-cf2*-1-coref-Ronald_Coase)
21	and	and	CCONJ	CC	_	22	cc	22:cc	_
22	North	North	PROPN	NNP	Number=Sing	20	conj	18:obl:agent|20:conj:and	Entity=(19-person-giv:act-cf3-1-coref-Douglass_North)|SpaceAfter=No
23	,	,	PUNCT	,	_	24	punct	24:punct	_
24	respectively	respectively	ADV	RB	Degree=Pos	18	advmod	18:advmod	Entity=24)|SpaceAfter=No
25	.	.	PUNCT	.	_	11	punct	11:punct	_
