@book{on+a+theory+of+the+stresses+in+crane+and+coupling+hooks+with+experimental+comparison+with+existing+theory,
    author = {Andrews, Ewart Sigmund i Pearson, Karl},
    title = {On a theory of the stresses in crane and coupling hooks with experimental comparison with existing theory},
    address = {London},
    publisher = {Published by Dulau},
    date = {1904}
}