@article{article,
title = {Comparison of Factors Affecting Soil Nitrate Nitrogen and Ammonium Nitrogen Extraction},
author = {},
year = {2012},
journal = {Communications in Soil Science and Plant Analysis},
volume = {43},
number = {3},
pages = {571-588},
howpublished = "\url{https://eurekamag.com/research/064/177/064177349.php}"
}