@article{107073, author = {Erich Barv\'\i nek}, title = {Linear differential transformations of the 2nd order as a representation of an abstract model}, journal = {Archivum Mathematicum}, volume = {016}, year = {1980}, pages = {189-198}, zbl = {0465.34005}, mrnumber = {594465}, language = {en}, url = {http://dml.mathdoc.fr/item/107073} }
Barvínek, Erich. Linear differential transformations of the 2nd order as a representation of an abstract model. Archivum Mathematicum, Tome 016 (1980) pp. 189-198. http://gdmltest.u-ga.fr/item/107073/
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