• البحوث الحديثة بشأن مكاسب الرفاه الهامة الناشئة عن توافق في تحرير أسلوب التوريد 4؛
Recent research on the important welfare gains resulting from liberalization of Mode 4; Examination of different categories of persons to clarify scope and definitional issues; Barriers to movement of persons (lack of distinction between permanent and temporary movement in immigration legislation, economic needs test (ENT), visa and entry requirements, pre-employment requirements, wage parity/social security issues, etc.); Recognition of professional qualifications (licensing, work and training requirements, impact of mutual recognition agreements); Different options in respect of negotiating modality to ensure the highest level of liberalization in this mode (formula approach, improvement of transparency of measures and legislative framework, GATS visas).