On the generators of quantum dynamical semigroups by G. Lindblad (1976, 10.1007/BF01608499)

Communications in Mathematical Physics 48, 119–130. The publisher author record gives G. Lindblad; no unverified expansion of the name is asserted here.

Original theorem on generators of completely positive quantum dynamical semigroups. The finite-dimensional Schrödinger-picture form in the concept article uses hbar=1 and gives an independently calculated dephasing example.