def METHOD_NAME(layer_input):
    """Residual block described in paper"""
    d = Conv2D(64, kernel_size=3, strides=1, padding='same')(layer_input)
    d = BatchNormalization(momentum=0.8)(d)
    d = Activation('relu')(d)
    d = Conv2D(64, kernel_size=3, strides=1, padding='same')(d)
    d = BatchNormalization(momentum=0.8)(d)
    d = Add()([d, layer_input])
    return d