Ground state solution for a non-autonomous 1-Laplacian problem involving periodic potential in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mi>ℝ</mml:mi> <mml:mi>N</mml:mi> </mml:msup></mml:math>
Comptes rendus. Mathématique/Comptes rendus. Mathématique