@article{ELA_2011__22__a4,
     author = {Compta, Albert and Ferrer, Josep and Pena, Marta},
     title = {Geometric structure of single/combined equivalence classes of a controllable pair},
     journal = {The electronic journal of linear algebra},
     pages = {1112--1128},
     publisher = {mathdoc},
     volume = {22},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2011__22__a4/}
}