@book{MR0142019,
  author = {Akhiezer, Naum I.},
  title = {The calculus of variations},
  publisher = {Blaisdell Publishing Co. (A Division of Random House, Inc.), New York-London},
  year = {1962},
  pages = {viii+248}
}

@book{has-no-MR,
  author = {Arthurs, Arnold Magowan},
  title = {Calculus of Variations},
  publisher = {Routledge & Kegan Paul Books},
  year = {1975}
}

@book{MR0123206,
  author = {Bolza, Oskar},
  title = {Lectures on the calculus of variations},
  publisher = {2nd ed. Chelsea Publishing Co., New York},
  year = {1961},
  pages = {ix+271}
}

@book{MR2004181,
  author = {van Brunt, Bruce},
  title = {The calculus of variations},
  publisher = {Springer-Verlag},
  year = {2004},
  pages = {xiv+290}
}

@book{MR3099985,
  author = {Burns, John A.},
  title = {Introduction to the calculus of variations and control---with
 modern applications},
  publisher = {CRC Press, Boca Raton, FL},
  year = {2014},
  pages = {xviii+544}
}

@book{MR0192372.MR0232264,
  author = {Carathéodory, C.},
  title = {Calculus of variations and partial differential equations of the first order. Part I: Partial differential equations of the first order + Part II: Calculus of variations},
  publisher = {Holden-Day Inc.},
  year = {1965+1967},
  pages = {xvi+171, xvi+175-398}
}

@book{MR2480025,
  author = {Dacorogna, Bernard},
  title = {Introduction to the calculus of variations},
  publisher = {Imperial College Press},
  year = {2009},
  pages = {xiv+285},
  edition = {Second},
  note = {Translated from the 1992 French original}
}

@book{MR0133032,
  author = {Elsgolc, L. E.},
  title = {Calculus of variations},
  publisher = {Dover (reprint of Pergamon Press Ltd., London-Paris-Frankfurt, Addison-Wesley Publishing Co., Inc., Reading, Mass.)},
  year = {2007 (1962)},
  pages = {178}
}

@book{MR0375027,
  author = {Epheser, Helmut},
  title = {Vorlesung über Variationsrechnung},
  publisher = {Vandenhoeck & Ruprecht, Göttingen},
  year = {1973},
  pages = {184},
  note = {Studia Mathematica, Skript i}
}

@book{MR0242032,
  author = {Ewing, George M.},
  title = {Calculus of variations with applications},
  publisher = {W. W. Norton & Co. Inc., New York},
  year = {1969},
  pages = {xii+343}
}

@book{0964.49001,
  author = {Gelfand, I.M. and Fomin, S.V.},
  title = {Calculus of variations. Transl. from the Russian and edited by Richard A. Silverman. Reprint of the 1963 original.},
  publisher = {Mineola, NY: Dover Publications. vii, 232 p.  9.95 },
  year = {2000}
}

@book{MR1385926,
  author = {Giaquinta, Mariano and Hildebrandt, Stefan},
  title = {Calculus of variations. II},
  publisher = {Springer-Verlag, Berlin},
  year = {1996},
  volume = {311},
  pages = {xxx+652},
  note = {The Hamiltonian formalism}
}

@book{MR0203540,
  author = {Hestenes, Magnus R.},
  title = {Calculus of variations and optimal control theory},
  publisher = {John Wiley & Sons, Inc., New York-London-Sydney},
  year = {1966},
  pages = {xii+405}
}

@book{zbMATH05797310,
  author = {Hansjörg Kielhöfer},
  title = {Variationsrechnung. Eine Einführung in die Theorie einer unabhängigen Variablen mit Beispielen und Aufgaben.},
  publisher = {Wiesbaden: Vieweg+Teubner},
  year = {2010},
  pages = {viii + 278},
  url = {https://link-springer-com.emedien.ub.uni-muenchen.de/book/10.1007/978-3-8348-9670-4?view=modern}
}

@book{MR996635,
  author = {Klingbeil, Eberhard},
  title = {Variationsrechnung},
  publisher = {Bibliographisches Institut, Mannheim},
  year = {1988},
  pages = {331},
  edition = {Second}
}

@book{MR3241749,
  author = {Kot, Mark},
  title = {A first course in the calculus of variations},
  publisher = {American Mathematical Society, Providence, RI},
  year = {2014},
  volume = {72},
  pages = {x+298},
  url = {http://dx.doi.org/10.1090/stml/072},
  doi = {http://dx.doi.org/10.1090/stml/072}
}

@book{MR2895149,
  author = {Liberzon, Daniel},
  title = {Calculus of variations and optimal control theory},
  publisher = {Princeton University Press, Princeton, NJ},
  year = {2012},
  pages = {xviii+235},
  note = {A concise introduction}
}

@book{MR2522971,
  author = {Mesterton-Gibbons, Mike},
  title = {A primer on the calculus of variations and optimal control
 theory},
  publisher = {American Mathematical Society, Providence, RI},
  year = {2009},
  volume = {50},
  pages = {xiv+252},
  url = {http://dx.doi.org/10.1090/stml/050},
  doi = {http://dx.doi.org/10.1090/stml/050}
}

@book{MR0147932,
  author = {Pars, L. A.},
  title = {An introduction to the calculus of variations},
  publisher = {Dover reprint (John Wiley & Sons Inc., New York)},
  year = {2010 (1962)},
  pages = {xi+350}
}

@book{MR1210325,
  author = {Sagan, Hans},
  title = {Introduction to the calculus of variations},
  publisher = {Dover Publications Inc.},
  year = {1992},
  pages = {xviii+449},
  note = {Corrected reprint of the 1969 original}
}

@book{MR942442,
  author = {Woodhouse, Robert},
  title = {A history of the calculus of variations in the eighteenth century},
  publisher = {Chelsea Publishing Co.},
  year = {1988},
  pages = {x+154},
  note = {Reprint of the 1810 edition}
}

@book{MR0259704,
  author = {Young, L. C.},
  title = {Lectures on the calculus of variations and optimal control theory},
  publisher = {W. B. Saunders Co.},
  year = {1969},
  pages = {xi+331},
  note = {AMS Chealsea Publishing 1980 reprint}
}