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+\name{FOMC}
+\Rdversion{1.1}
+\alias{FOMC}
+\title{ First-Order Multi-Compartment kinetics }
+\description{
+  Function describing exponential decline from a defined starting value, with 
+  a decreasing rate constant. 
+
+  The form given here differs slightly from the original reference by Gustafson
+  and Holden (1990). The parameter \code{beta} corresponds to 1/beta in the
+  original equation.
+}
+\usage{
+FOMC(t, parent.0, alpha, beta)
+}
+\arguments{
+  \item{t}{ Time. }
+  \item{parent.0}{ Starting value for the response variable at time zero. }
+  \item{alpha}{ 
+    Shape parameter determined by coefficient of variation of rate constant
+    values. }
+  \item{beta}{
+    Location parameter.
+}
+}
+\note{
+  The FOMC kinetic model reduces to the \code{\link{SFO}} kinetic model for
+  large values of \code{alpha} and \code{beta} with 
+  \eqn{k = \frac{\beta}{\alpha}}{k = beta/alpha}.
+}
+\value{
+  The value of the response variable at time \code{t}.
+}
+\references{
+  FOCUS (2006) \dQuote{Guidance Document on Estimating Persistence and
+  Degradation Kinetics from Environmental Fate Studies on Pesticides in EU
+  Registration} Report of the FOCUS Work Group on Degradation Kinetics,
+  EC Document Reference Sanco/10058/2005 version 2.0, 434 pp,
+  \url{http://focus.jrc.ec.europa.eu/dk} 
+
+  Gustafson DI and Holden LR (1990) Nonlinear pesticide dissipation in soil: A
+  new model based on spatial variability. \emph{Environmental Science and 
+  Technology} \bold{24}, 1032-1038
+}
+\author{ Johannes Ranke }
+\examples{
+  \dontrun{plot(function(x) FOMC(x, 100, 10, 2), 0, 2)}
+}
+\keyword{ manip }