@article{JDM_1907__16_145093,
     author = {Edm. Hoppe},
     title = {Die {Verdienste} {Eulers} um die {Optik.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {558--567},
     publisher = {mathdoc},
     volume = {16},
     year = {1907},
     zbl = {38.0013.02},
     url = {http://geodesic.mathdoc.fr/item/JDM_1907__16_145093/}
}