I. INTRODUCTION AND MOTIVATION  
A. Motivation for research  
B. Our Contributions  
C. Related surveys  
D. Review process  
E. Paper organization  

II. PRELIMINARIES  

III. A BIBLIOMETRIC PERSPECTIVE OF QFA  

IV. QUANTUM COMPUTING MODELS  
B. Latvian quantum finite automata  
C. QFA with control language  
D. Ancilla QFA  

V. LITERATURE REVIEW  
B. Other results  
C. Closure Properties  
D. Equivalence and Minimization of quantum finite automata  
E. Simulations of classical counterparts  

VI. SOME OPEN PROBLEMS  

VII. CONCLUSION