14H99 None of the above, but in this section (1 articles) 
- 
Vogel, Wolfgang:
		Klasický problém teórie kriviek.
		
			(Slovak) [A classical problem of the theory of curves].
Pokroky matematiky, fyziky a astronomie,
		vol. 20
			(1975),
			issue 2,
		pp. 77-83
 
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