@第{zbMATH05020748条，作者={Garc{'{\i}}a，P.L.和Garc{\'{i}}a，a.和Rodrigo，C.}，标题={一阶约束变分问题的Cartan形式}，FJournal={几何与物理杂志}，Journal＝{J.Geom.Phys.}，ISSN={0393-0440}，体积={56}，数字={4}，页码={571--610}，年份={2006}，语言={英语}，DOI={10.1016/j.geomphys.2005.04.002}，关键词={58E30,58A15,70S05,70S10,53A10,70H30}，zbMATH={5020748}，Zbl={1089.58013}}