@article{AIHPC_2015__32_2_245_0,
     author = {Fanelli, Francesco and Zuazua, Enrique},
     title = {Weak observability estimates for {1-D} wave equations with rough coefficients},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {245--277},
     publisher = {Elsevier},
     volume = {32},
     number = {2},
     year = {2015},
     doi = {10.1016/j.anihpc.2013.10.004},
     mrnumber = {3325237},
     zbl = {1320.93027},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.anihpc.2013.10.004/}
}