I. INTRODUCTION
A. Research Questions
B. Related Work

II. METHODOLOGY
A. Data Collection
B. Study Selection
C. Classification

III. RESULTS
A. RQ1: Publication Trend
B. RQ2: Hybrid Solutions
C. RQ3: Technical Aspects Addressed in Solutions

IV. SUMMARIZING THE STATE-OF-THE-ART

V. FUTURE VISIONS

VI. CONCLUSION