The mobility of Cu(II), Cd(II), Pb(II) ions adsorbed on (hydr)oxide sorbents Al2O3ЧnH2O and AlkhM1–khOuЧnH2O, M — Zr(IV), Ti(IV), Sn(IV) - E. O. Kudelko; T. V. Maltseva (Ukrainian Chemistry Journal, 2011)