@article{RSMUP_1996__96__37_0,
     author = {Cie\'slak, W. and Miernowski, A. and Mozgawa, W.},
     title = {Isoptics of a closed strictly convex curve. - {II}},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {37--49},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {96},
     year = {1996},
     mrnumber = {1438287},
     zbl = {0881.53003},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1996__96__37_0/}
}