@article{Robbins_1951,
    doi = {10.1214/aoms/1177729586},
    url = {https://doi.org/10.1214%2Faoms%2F1177729586},
    year = {1951},
    month = {sep},
    publisher = {Institute of Mathematical Statistics},
    volume = {22},
    number = {3},
    pages = {400--407},
    author = {Herbert Robbins and Sutton Monro},
    title = {A Stochastic Approximation Method},
    journal = {The Annals of Mathematical Statistics}
}

@article{Robbins_1951, doi = {10.1214/aoms/1177729586}, url = {https://doi.org/10.1214%2Faoms%2F1177729586}, year = {1951}, month = {sep}, publisher = {Institute of Mathematical Statistics}, volume = {22}, number = {3}, pages = {400--407}, author = {Herbert Robbins and Sutton Monro}, title = {A Stochastic Approximation Method}, journal = {The Annals of Mathematical Statistics} }