TY - JOUR KW - non-Palaiseau KW - paper AU - Alfred Maquet AU - Paul Martin AU - Valérie Véniard BT - PHYSICS LETTERS A DA - MAY 2 M1 - 1 PY - 1988 SP - 26 EP - 28 T2 - PHYSICS LETTERS A TI - 1ST ORDER CORRECTIONS TO THE WAVE-FUNCTION OF A HYDROGEN-ATOM IN AN EXTERNAL ELECTROMAGNETIC-FIELD - A STURMIAN EXPANSION VL - 129 SN - 0375-9601 ER -