@article{CRPHYS_2003__4_6_639_0,
     author = {Carlo Sirtori and Julien Nagle},
     title = {Quantum {Cascade} {Lasers:} the quantum technology for~semiconductor lasers in the mid-far-infrared},
     journal = {Comptes Rendus. Physique},
     pages = {639--648},
     publisher = {Elsevier},
     volume = {4},
     number = {6},
     year = {2003},
     doi = {10.1016/S1631-0705(03)00110-5},
     language = {en},
}