@ARTICLE{
author={Angst M,Di Castro D,Eshchenko DG,Khasanov Rustem,Kohout S,Savic Ilija M,Shengelaya A,Bud 'ko SL,Canfield PC,Jun J,Karpinski J,Kazakov SM,Ribeiro RA,Keller H},
year={2004},
title={Anisotropy and internal-field distribution of MgB2 in the mixed state at low temperatures},
journal={PHYSICAL REVIEW B},
volume={70},
number={22},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Di Castro D,Angst M,Eshchenko DG,Khasanov Rustem,Roos J,Savic Ilija M,Shengelaya A,Bud 'ko SL,Canfield PC,Conder K,Karpinski J,Kazakov SM,Ribeiro RA,Keller H},
year={2004},
title={Absence of a boron isotope effect in the magnetic penetration depth of MgB2},
journal={PHYSICAL REVIEW B},
volume={70},
number={1},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Khasanov Rustem,Shengelaya A,Morenzoni Elvezio,Angst M,Conder K,Savic Ilija M,Lampakis D,Liarokapis E,Tatsi A,Keller H},
year={2003},
title={Site-selective oxygen isotope effect on the magnetic-field penetration depth in underdoped Y0.6Pr0.4Ba2Cu3O7-delta},
journal={PHYSICAL REVIEW B},
volume={68},
number={22},
pages={-},
document_type={Article},
}