Please recheck the Lit cit. I corrected some formatting and spelling errors, but there are probably more. Four references are incomplete: Boynton 2012, Lau et al. 2016, and R. Core Team 2016 have titles only. Sources, pagination/doi &c. required. Wood et al. 2016 has journal name, but no volume or page numbers (or doi). I may have missed others.
Please recheck the Lit cit. I corrected some formatting and spelling errors, but there are probably more. Four references are incomplete: Boynton 2012, Lau et al. 2016, and R. Core Team 2016 have titles only. Sources, pagination/doi &c. required. Wood et al. 2016 has journal name, but no volume or page numbers (or doi). I may have missed others.