Biharmonic eigen-value problems and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="$L^p $" id="E1"><mml:mrow><mml:msup><mml:mi>L</mml:mi><mml:mi>p</mml:mi></mml:msup></mml:mrow></mml:math>estimates
International journal of mathematics and mathematical sciences