Provides functions to automatically retrieve and deduplicate reference metadata based on saved search strings. Access to Web of Science and Scopus requires personal API keys, while PubMed can be queried without one. The optional deduplication functionality requires the package 'ASySD' available from <https://github.com/camaradesuk/ASySD>.

Dataset and functions to explore quality of literary novels. The package is a part of the Riddle of Literary Quality project, and it contains the data of a reader survey about fiction in Dutch, a description of the novels the readers rated, and the results of stylistic measurements of the novels. The package also contains functions to combine, analyze, and visualize these data. For more details, see: Eder M, van Zundert J, Lensink S, van Dalen-Oskam K (2022). Replicating The Riddle of Literary Quality: The litRiddle package for R. In _Digital Humanities 2022: Conference Abstracts_, 636-637.

Data sets on various litter types like beach litter, riverain
    litter, floating litter, and seafloor litter are rapidly growing. This 
    package offers a simple user interface to analyse these litter data in
    a consistent and reproducible way. It also provides functions to 
    facilitate several kinds of litter analysis, e.g., trend analysis, 
    power analysis, and baseline analysis. Under the hood, these functions 
    are also used by the user interface. See Schulz et al. (2019)
    <doi:10.1016/j.envpol.2019.02.030> for details. MS-Windows users are
    advised to run 'litteR' in 'RStudio'. See our vignette: Installation manual 
    for 'RStudio' and 'litteR'.

Fit different model forms to single-cohort litter 
    decomposition data (mass remaining through time) using likelihood-based 
    estimation. Models span simple empirical to process-motivated forms with 
    differing numbers of free parameters. Provides parameter estimates, 
    uncertainty, and tools for model comparison/selection. Based on 
    Cornwell & Weedon (2013) <doi:10.1111/2041-210X.12138>.