@ARTICLE {,
title = {Pathfinder a gravitačné zrýchlenie Marsu},
author = {Parulek, Ivan and Matejka, Michal},
journal = {Obzory matematiky, fyziky a informatiky},
year = {1999},
volume = {28},
number = {58},
pages = {37--42},
issn = {1335-4981},
}