Sohail Butt

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Sarfraz, Muhammad, Butt, Sohail, Hussain, Malik Zawwar (2001): Visualization of shaped data by a rational cubic spline interpolation. In Computers & Graphics, 25 (5) pp. 833-845.

Brodlie, Ken, Mashwama, Petros, Butt, Sohail (1995): Visualization of surface data to preserve positivity and other simple constraints. In Computers & Graphics, 19 (4) pp. 585-594.

Butt, Sohail, Brodlie, Ken (1993): Preserving positivity using piecewise cubic interpolation. In Computers & Graphics, 17 (1) pp. 55-64.

Brodlie, Ken, Butt, Sohail (1991): Preserving convexity using piecewise cubic interpolation. In Computers & Graphics, 15 (1) pp. 15-23.

Sarfraz, Muhammad, Hussain, Malik Zawwar, Butt, Sohail (2000): A Rational Spline for Visualizing Positive Data. In: IV 2000 , 2000, . pp. 57-62.