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Calculus of variations on time scales: weak local piecewise C1rd solutions with variable endpoints J - Článek v odborném periodikuHILSCHER, Roman a Vera ZEIDAN. Calculus of variations on time scales: weak local piecewise C1rd solutions with variable endpoints. Journal of Mathematical Analysis and Applications. San Diego (USA): Elsevier Science, 2004, roč. 289, č. 1, s. 143-166. ISSN 0022-247X.Podrobněji: https://is.muni.cz/publication/490806/cs