Analytic approach to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="$q\bar q$" id="E1"><mml:mi>q</mml:mi><mml:mover accent="true"><mml:mi>q</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math>systems in potential models
International journal of mathematics and mathematical sciences