TY - JOUR AU - Mandl, Petr TI - Spectral theory of semi-groups connected with diffusion processes and its application JO - Czechoslovak Mathematical Journal PY - 1961 SP - 558 EP - 569 VL - 11 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1961.100484/ DO - 10.21136/CMJ.1961.100484 LA - en ID - 10_21136_CMJ_1961_100484 ER -