@ARTICLE{
author={Cappiello Marco,Gramchev Todor,Pilipovic Stevan,Rodino Luigi},
year={2019},
title={Anisotropic Shubin Operators and Eigenfunction Expansions in Gelfand-Shilov Spaces},
journal={JOURNAL D ANALYSE MATHEMATIQUE},
volume={138},
number={2},
pages={857-870},
document_type={Article},
} 

@ARTICLE{
author={Gramchev Todor,Pilipovic Stevan,Rodino Luigi,Vindas Jasson},
year={2015},
title={Weyl asymptotics for tensor products of operators and Dirichlet divisors},
journal={ANNALI DI MATEMATICA PURA ED APPLICATA},
volume={194},
number={3},
pages={823-841},
document_type={Article},
} 

@ARTICLE{
author={Gramchev Todor,Pilipovic Stevan,Rodino Luigi},
year={2011},
title={Eigenfunction Expansions in R(n)},
journal={PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY},
volume={139},
number={12},
pages={4361-4368},
document_type={Article},
} 

@ARTICLE{
author={Gramchev Todor,Pilipovic Stevan,Rodino Luigi},
year={2010},
title={Global Regularity and Stability in S-Spaces for Classes of Degenerate Shubin Operators},
journal={PSEUDO-DIFFERENTIAL OPERATORS: COMPLEX ANALYSIS AND PARTIAL DIFFERENTIAL EQUATIONS},
volume={205},
number={},
pages={81-+},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Gramchev Todor,Pilipovic Stevan,Rodino Luigi,Wong MW},
year={2009},
title={Spectral properties of the twisted bi-Laplacian},
journal={ARCHIV DER MATHEMATIK},
volume={93},
number={6},
pages={565-575},
document_type={Article},
}