@article{BAG_2001__42_1_228011,
     author = {Miernowski, A. and Mozgawa, W.},
     title = {Isoptics of pairs of nested closed strictly convex curves and {Crofton-type} formulas.},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {281},
     publisher = {mathdoc},
     volume = {42},
     number = {1},
     year = {2001},
     zbl = {1021.53050},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/BAG_2001__42_1_228011/}
}