@article{TUW-270017, author = {Landskron, Daniel and B{\"o}hm, Johannes}, title = {Refined discrete and empirical horizontal gradients in VLBI analysis}, journal = {Journal of Geodesy}, year = {2018}, volume = {12}, number = {92}, pages = {1387--1399}, doi = {10.1007/s00190-018-1127-1} }