Kuzmin A.D. , Kardashev N.S. , Nikolaev N.Y. , Novikov A.Y. , Popov M.V. , Soglasnov V.A. , Smirnova T.V. , Bartel N.. , Sieber W.. , Wielebinski R.. PSR 1133+16: Determination of the Dispersion Measure and the Locations of the Emitting Regions. Astron. and Astrophys. , Vol.109,N2 , с. P.340-343 , 01.1982