Transverse momentum spectra of charged particles in proton-proton collisions at 'X POT.1/2' =900 GeV with ALICE at the LHC - Aamodt, K; Deppman, Airton; Munhoz, Marcelo Gameiro; Suaide, Alexandre Alarcon do Passo; Szanto de Toledo, Alejandro (Physics Letters B, 2010)