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K. Janglajew, E. Pawłuszewicz
Constrained local controllability of dynamic systems on time scales
Adv. Difference Equ. 2015 (2015), no. 1, 1-10.
DOI:
10.1186/s13662-015-0422-x
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K. Janglajew, E. Schmeidel
The factorization of the linear differential operator
Differential and Differrence Equations and Applications 2014, International Conference CDDEA, Jun 23-27, 2014, Jasna, Slovak Republic, (M. Růžičková Ed(s).), Tatra Mt. Math. Publ. vol. 63, (publ. by) Slovak Academy of Sciences, 2015, pp. 139-151.
DOI:
10.1515/tmmp-2015-0026