@article{10_4064_aa_22_3_339_352,
     author = {Carlo Viola},
     title = {On the diophantine equations $\prod_{0}^k x_i - \sum_{0}^k x_i = n and \sum_{0}^k 1/x_i = a/n$},
     journal = {Acta Arithmetica},
     pages = {339--352},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1972},
     doi = {10.4064/aa-22-3-339-352},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-22-3-339-352/}
}