Tests of CPT

Abstract

A few remarks concerning theoretical suggestions and experimental tests of CPT during 1980's - 1990's. Is it worth to search for the particle-antiparticle mass differences in sectors other than $K^0{\bar{K}}^0$?

Comments: Latex, 5 pages,Talk at the Workshop on $K$-physics, ORSAY, France, 30 May - 4 June, 1996