TY - JOUR AU - Vejvoda, Otto TI - On the existence and stability of the periodic solution of the second kind of a certain mechanical system JO - Czechoslovak Mathematical Journal PY - 1959 SP - 390 EP - 415 VL - 09 IS - 3 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1959.100364/ DO - 10.21136/CMJ.1959.100364 LA - en ID - 10_21136_CMJ_1959_100364 ER -