@book{ponts+suspendus+t+1+ponts+suspendus+flexibles+et+semi+rigides,
    author = {Leinekugel le Cocq, Gaston},
    title = {Ponts suspendus. T. 1, Ponts suspendus flexibles et semi-rigides},
    address = {Paris},
    publisher = {Octave Doin et Fils, Éditeurs},
    date = {1911}
}