Totally real surfaces in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="$CP^2 $" id="E1"><mml:mrow><mml:mi>C</mml:mi><mml:msup><mml:mi>P</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:mrow></mml:math>with parallel mean curvature vector
International journal of mathematics and mathematical sciences