Magnetic interaction in Mg, Ti, Nb doped manganitesI. O. Troyanchuk, M. V. Bushinsky, H. Szymczak, K. Bärner and A. MaignanEur. Phys. J. B, 28 1 (2002) 75-80DOI: https://doi.org/10.1140/epjb/e2002-00202-2