Author: Gavlas, Heather

Chartrand, Gary; Gavlas, Heather; Schulz, Kelly; Winters, Steve J.: On strong digraphs with a prescribed ultracenter. (English). Czechoslovak Mathematical Journal, vol. 47 (1997), issue 1, pp. 83-94
Chartrand, Gary; Gavlas, Heather; Henning, Michael A.; Rashidi, Reza: Stratidistance in stratified graphs. (English). Mathematica Bohemica, vol. 122 (1997), issue 4, pp. 337-347
Chartrand, Gary; Gavlas, Heather; Harary, Frank; Schultz, Michelle: On signed degrees in signed graphs. (English). Czechoslovak Mathematical Journal, vol. 44 (1994), issue 4, pp. 677-690

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