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The non-relativistic limit of the linear wave equation for zero and unityspin bosons of mass $m$ in the Duffin-Kemmer-Petiau representation isinvestigated by means of a unitary transformation, analogous to theFoldy-Wouthuysen canonical transformation for a relativistic electron. Theinteracting case is also analyzed, by considering a power series expansion ofthe transformed Hamiltonian, thus demonstrating that all features of particledynamics can be recovered if corrections of order $1/m^{2}$ are taken intoaccount through a recursive iteration procedure.

On the Non-relativistic Limit of Linear Wave Equations for Zero and Unity Spin Particles