@article{CRMATH_2013__351_1-2_13_0,
     author = {V\'eronique Fischer and Michael Ruzhansky},
     title = {Lower bounds for operators on graded {Lie} groups},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {13--18},
     publisher = {Elsevier},
     volume = {351},
     number = {1-2},
     year = {2013},
     doi = {10.1016/j.crma.2013.01.004},
     language = {en},
}