Extremal Trees with respect to Number of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mo stretchy="false">(</mml:mo><mml:mi>A</mml:mi><mml:mo>,</mml:mo><mml:mi>B</mml:mi><mml:mo>,</mml:mo><mml:mn fontstyle="italic">2</mml:mn><mml:mi>C</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math>-Edge Colourings
Journal of applied mathematics