au.\*:("KRONK HV")
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THE CHROMATIC NUMBER OF TRIANGLE-FREE GRAPHSKRONK HV.1972; LECTURE NOTES MATH.; GERM.; DA. 1972; NO 303; PP. 179-181; BIBL. 9 REF.Serial Issue
A 4-COLOR THEOREM FOR TOROIDAL GRAPHSKRONK HV; WHITE AT.1972; PROC. AMER. MATH. SOC.; U.S.A.; DA. 1972; VOL. 34; NO 1; PP. 83-86; BIBL. 5 REF.Serial Issue
ON 2-CELL IMBEDDINGS OF COMPLETE N-PARTITE GRAPHS.KRONK HV; RINGEISEN RD; WHITE AT et al.1976; COLLOQ. MATH.; POLOGNE; DA. 1976; VOL. 36; NO 2; PP. 295-304; BIBL. 21 REF.Article