It's a calculator and not a paper, so it's cited as one. The url is the
page that prints the formula, the nitrogen-requirement factors and the four
addition points. /tosna returns 404 (as of this writing) and
/tosna-calculator is the tool itself, which doesn't state any of the
coefficients. Per the rule at the top of this file, the link goes where the
work is.
TOSNA, as its author publishes it.
It's a calculator and not a paper, so it's cited as one. The
urlis the page that prints the formula, the nitrogen-requirement factors and the four addition points./tosnareturns 404 (as of this writing) and/tosna-calculatoris the tool itself, which doesn't state any of the coefficients. Per the rule at the top of this file, the link goes where the work is.