TY - JOUR T1 - The Lagrange equations for systems with mass varying explicitly with position: some applications to offshore engineering JO - Journal of the Brazilian Society of Mechanical Sciences and Engineering A1 - Pesce, Celso P. A1 - Tannuri, Eduardo A. A1 - Casetta, Leonardo SN - 1678-5878 UL - 10.1590/S1678-58782006000400015 VL - 28 Y1 - 2006 PB - Brasil ER -