Table 2.

Number of alternatives and type of approach considered in reviewed applications.

Code	Author		Problem				Approach		Reference
			N	S	T	Alternatives	Sequential	Holistic
A1	Amador-Jiménez and Mrawira		3	—	30	330	x		[18]
A2	Chamorro		39	4	10	39 × 410	x		[2]
A3	Chan et al.		500	—	—	500	x		[30]
A4	Chootinan et al.		35	4	10	435×10		x	[31]
A5	Chou and Le		1	15	15	1515	x		[28]
A6	De La Garza et al.		5	9	15	95×15		x	[16]
A7	Farhan and Fwa		150	4	1	150 × 41	x		[25]
A8	Feighan et al.		14	5	5–15	14 × 515	x		[14]
A9	Ferreira et al.		27	6	4	627×4		x	[22]
A10	Fwa and Chan		128	—	—	128	x		[33]
A11	Fwa and Farhan		150	4	1	150 × 41	x		[26]
A12	Gao and Zhang		—	4	5	45	x		[19]
A13	Gao et al.		3	4	10	43×10		x	[17]
A14	Meneses and Ferreira		32	7	20	732×20		x	[32]
A15	Moazami et al.		131	—	—	131	x		[34]
A16	Ng et al.		—	4	5–10	410	x		[20]
A17	Odoki and Kerali	Integer program.	100	16	5	x	x		[21]
A18		Increm. benefit cost	400	17	12	x	x		[21]
A19	Reddy and Veeraragavan		52	—	—	52	x		[13]
A20	Shah et al.		21	4	10	21 × 410	x		[12]
A21	Tsunokawa et al.		—	5	20	520	x		[27]
A22	Wang et al.		10	5	5	510×5		x	[23]
A23	Yoo and Garcia-Diaz		40	4	7	440×7		x	[24]