@misc{MARSLBB_1861__33_182606,
     title = {Observations faites en 1860, \`a {Bruxelles;} {Vilvorde,} {Anvers,} {Ostende,} {Namur,} {Spa,} {Stavelot,} {Jemeppe-sur-Meuse,} {Vienne,} {Venise.}},
     journal = {M\'emoires de l 'Acad\'emie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique},
     pages = {57--64},
     publisher = {mathdoc},
     volume = {33},
     year = {1861},
     url = {http://geodesic.mathdoc.fr/item/MARSLBB_1861__33_182606/}
}