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"3-coloring arrangements of line segments with 4 slopes is hard."
Patrizio Angelini, Giordano Da Lozzo (2018)
- Patrizio Angelini
, Giordano Da Lozzo
:
3-coloring arrangements of line segments with 4 slopes is hard. Inf. Process. Lett. 137: 47-50 (2018)

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