Reply to the Comment on ``Theorem on the proportionality of inertial and   gravitational masses in classical mechanics"
  In the Comment [Eur. J. Phys., to be published] on our paper [Eur. J. Phys. 19 (1998) 1-6], the author declares that we claim that the ratio of inertial mass to gravitational mass can be derived ex nihilo and that our paper was published "by mistake". In this "Reply" we dispute the point of view of the author. 
Andrew E. Chubykalo and Stoyan J. Vlaev