Canonical transformations associated with second order problems in the calculus of variations H. S. P. Grässer OriginalPaper Pages: 1 - 29
Su un problema misto per un sistema di equazioni a derivate parziali Maria Grazia Cazzani Nieri OriginalPaper Pages: 131 - 177
Some oscillatory properties of second order non linear differential equations Marko Švec OriginalPaper Pages: 179 - 191
On the global existence of solutions and Liapunov functions Junji KatoAaron Strauss OriginalPaper Pages: 303 - 316
A method for determining upper bounds for the smallest eigenvalue in a class of singular problems Walter Leighton OriginalPaper Pages: 317 - 326
An existence theorem for non-linear differential systems Sandra Ness Hilt OriginalPaper Pages: 327 - 335
L'equazione\(y\frac{{dy}}{{dx}} + y + \left| x \right|^v \) sgnx=0, (1≥v≥0)sgnx=0, (1≥v≥0) Giovanni Sansone OriginalPaper Pages: 337 - 375
An imbedding theorem for parameter-invariant higher order problems in the calculus of variations H. S. P. Grässer Pretoria OriginalPaper Pages: 377 - 394