Avoiding bias effects in NMR experiments for heteronuclear dipole-dipole coupling determinations: principles and application to organic semiconductor materials - Kurz, Ricardo; Cobo, Marcio Fernando; Azevêdo, Eduardo Ribeiro de; Sommer, Michael Sommer; Wicklein, André; Thelakkat, Mukundan; Hempel, Günter; Saalwächter, Kay (ChemPhysChem, 2013)