S. M. Moore2026-03-222026-03-22198310.1007/bf02751797https://doi.org/10.1007/bf02751797https://andeanlibrary.org/handle/123456789/62509enPhysicsAnharmonicityCoupling constantElectromagnetic fieldQuantum electrodynamicsNoise (video)Balance (ability)Radiation dampingClassical mechanicsQuantum mechanicsRadiation balance and the stochastic van der pol-duffing equationarticle