TY - JOUR AU - Borislav Lazarov TI - Comparing two Ways of Elaboration of Complex Numbers JO - The Teaching of Mathematics PY - 2004 SP - 103 VL - VII IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM2_2004_VII_2_a3/ LA - en ID - TM2_2004_VII_2_a3 ER -