SEARCH FOR PAIR-PRODUCED HEAVY SCALARS IN Z(0) DECAYS - ABREU,P; ADAM,W; ADYE,T; AGASI,E; AJNINENKO,IK; ALEKSAN,R; ALEKSEEV,GD; ALLPORT,PP; ALMEHED,S; ALMEIDA,FML; ALVSVAAG,SJ; AMALDI,U; et al. (ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1994)