@article{Drach:2012td, author = "Drach, Vincent and Jansen, Karl and Dinter, Simon", title = "{Nucleon scalar matrix elements with N_f=2+1+1 twisted mass fermions}", doi = "10.22323/1.139.0152", journal = "PoS", year = 2012, volume = "Lattice 2011", pages = "152" }